diff --git a/app/models.py b/app/models.py
index 0520e1c..d45cd58 100644
--- a/app/models.py
+++ b/app/models.py
@@ -174,6 +174,9 @@ class Vehicle(db.Model):
     # Tracking unit (mileage or hours)
     tracking_unit = db.Column(db.String(20), default='mileage')  # mileage, hours
 
+    # Per-vehicle odometer unit override (if None, falls back to user's distance_unit)
+    odometer_unit = db.Column(db.String(10), default=None)  # km, mi, or None (use user preference)
+
     # Fuel info
     fuel_type = db.Column(db.String(20), default='petrol')  # petrol, diesel, electric, hybrid, lpg
     tank_capacity = db.Column(db.Float)  # in liters
@@ -219,6 +222,18 @@ class Vehicle(db.Model):
     charging_sessions = db.relationship('ChargingSession', backref='vehicle', lazy='dynamic',
                                         cascade='all, delete-orphan')
 
+    def get_effective_odometer_unit(self):
+        """Return the odometer unit for this vehicle.
+
+        Uses the vehicle's own odometer_unit if set, otherwise falls back to
+        the owner's distance_unit preference.
+        """
+        if self.odometer_unit:
+            return self.odometer_unit
+        if self.owner:
+            return self.owner.distance_unit
+        return 'km'
+
     def get_total_fuel_cost(self):
         return sum(log.total_cost for log in self.fuel_logs.all() if log.total_cost)
 
@@ -644,6 +659,12 @@ def get_all_branding():
     ('hours', 'Hours'),
 ]
 
+# Odometer unit options (for per-vehicle override)
+ODOMETER_UNITS = [
+    ('km', 'Kilometres (km)'),
+    ('mi', 'Miles (mi)'),
+]
+
 # Fuel types
 FUEL_TYPES = [
     ('petrol', 'Petrol/Gasoline'),
diff --git a/app/routes/api.py b/app/routes/api.py
index bec9cab..f434977 100644
--- a/app/routes/api.py
+++ b/app/routes/api.py
@@ -295,7 +295,7 @@ def vehicle_stats(vehicle_id):
         'expenses_by_category': category_totals,
         'total_fuel_cost': vehicle.get_total_fuel_cost(),
         'total_expense_cost': vehicle.get_total_expense_cost(),
-        'total_distance': vehicle.get_total_distance(current_user.distance_unit),
+        'total_distance': vehicle.get_total_distance(vehicle.get_effective_odometer_unit()),
         'avg_consumption': vehicle.get_average_consumption()
     })
 
diff --git a/app/routes/main.py b/app/routes/main.py
index 0891655..1ebf5bd 100644
--- a/app/routes/main.py
+++ b/app/routes/main.py
@@ -73,7 +73,7 @@ def dashboard():
         ).scalar()
         total_expense_cost = expense_result or 0
 
-        # Total distance
+        # Total distance (uses user's distance_unit for Tessie conversion; raw logs are in their stored unit)
         for vehicle in vehicles:
             total_distance += vehicle.get_total_distance(current_user.distance_unit)
 
diff --git a/app/routes/stations.py b/app/routes/stations.py
index d822374..fd9a8dc 100644
--- a/app/routes/stations.py
+++ b/app/routes/stations.py
@@ -134,11 +134,21 @@ def price_history(station_id):
     station = FuelStation.query.get_or_404(station_id)
 
     # Get price history ordered by date
-    prices = FuelPriceHistory.query.filter_by(station_id=station_id).order_by(
+    price_records = FuelPriceHistory.query.filter_by(station_id=station_id).order_by(
         FuelPriceHistory.date.desc()
     ).limit(50).all()
 
-    return render_template('stations/prices.html', station=station, prices=prices)
+    prices = price_records
+    prices_json = [
+        {
+            'date': p.date.isoformat() if p.date else None,
+            'fuel_type': p.fuel_type,
+            'price_per_unit': p.price_per_unit,
+        }
+        for p in price_records
+    ]
+
+    return render_template('stations/prices.html', station=station, prices=prices, prices_json=prices_json)
 
 
 @bp.route('/cheapest')
diff --git a/app/routes/vehicles.py b/app/routes/vehicles.py
index 222737f..a192320 100644
--- a/app/routes/vehicles.py
+++ b/app/routes/vehicles.py
@@ -7,7 +7,7 @@
 from flask_babel import gettext as _
 from werkzeug.utils import secure_filename
 from app import db
-from app.models import Vehicle, VehicleSpec, VehiclePart, FuelLog, Expense, User, Reminder, VEHICLE_TYPES, FUEL_TYPES, VEHICLE_SPEC_TYPES, REMINDER_TYPES, PART_TYPES, TRACKING_UNITS, AppSettings
+from app.models import Vehicle, VehicleSpec, VehiclePart, FuelLog, Expense, User, Reminder, VEHICLE_TYPES, FUEL_TYPES, VEHICLE_SPEC_TYPES, REMINDER_TYPES, PART_TYPES, TRACKING_UNITS, ODOMETER_UNITS, AppSettings
 from app.services.tessie import TessieService
 
 bp = Blueprint('vehicles', __name__, url_prefix='/vehicles')
@@ -47,6 +47,7 @@ def new():
             name=request.form.get('name'),
             vehicle_type=request.form.get('vehicle_type'),
             tracking_unit=request.form.get('tracking_unit', 'mileage'),
+            odometer_unit=request.form.get('odometer_unit') or None,
             make=request.form.get('make'),
             model=request.form.get('model'),
             year=int(request.form.get('year')) if request.form.get('year') else None,
@@ -95,6 +96,7 @@ def new():
                            vehicle_types=VEHICLE_TYPES,
                            fuel_types=FUEL_TYPES,
                            tracking_units=TRACKING_UNITS,
+                           odometer_units=ODOMETER_UNITS,
                            spec_types=VEHICLE_SPEC_TYPES,
                            tessie_configured=tessie_configured)
 
@@ -121,7 +123,7 @@ def view(vehicle_id):
         'total_fuel_cost': vehicle.get_total_fuel_cost(),
         'total_expense_cost': vehicle.get_total_expense_cost(),
         'total_cost': vehicle.get_total_cost(),
-        'total_distance': vehicle.get_total_distance(current_user.distance_unit),
+        'total_distance': vehicle.get_total_distance(vehicle.get_effective_odometer_unit()),
         'avg_consumption': vehicle.get_average_consumption(),
         'fuel_logs_count': vehicle.fuel_logs.count(),
         'expenses_count': vehicle.expenses.count()
@@ -168,6 +170,7 @@ def edit(vehicle_id):
         vehicle.name = request.form.get('name')
         vehicle.vehicle_type = request.form.get('vehicle_type')
         vehicle.tracking_unit = request.form.get('tracking_unit', 'mileage')
+        vehicle.odometer_unit = request.form.get('odometer_unit') or None
         vehicle.make = request.form.get('make')
         vehicle.model = request.form.get('model')
         vehicle.year = int(request.form.get('year')) if request.form.get('year') else None
@@ -224,6 +227,7 @@ def edit(vehicle_id):
                            vehicle_types=VEHICLE_TYPES,
                            fuel_types=FUEL_TYPES,
                            tracking_units=TRACKING_UNITS,
+                           odometer_units=ODOMETER_UNITS,
                            spec_types=VEHICLE_SPEC_TYPES,
                            specs=specs,
                            tessie_configured=tessie_configured)
@@ -360,7 +364,7 @@ def report(vehicle_id):
         'total_fuel_cost': vehicle.get_total_fuel_cost(),
         'total_expense_cost': vehicle.get_total_expense_cost(),
         'total_cost': vehicle.get_total_cost(),
-        'total_distance': vehicle.get_total_distance(current_user.distance_unit),
+        'total_distance': vehicle.get_total_distance(vehicle.get_effective_odometer_unit()),
         'avg_consumption': vehicle.get_average_consumption(),
         'fuel_logs_count': len(fuel_logs),
         'expenses_count': len(expenses)
diff --git a/app/templates/fuel/form.html b/app/templates/fuel/form.html
index 1f208d1..371a648 100644
--- a/app/templates/fuel/form.html
+++ b/app/templates/fuel/form.html
@@ -20,14 +20,15 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white mt-2">{% if log %}Ed
                         {% for vehicle in vehicles %}
                         <option value="{{ vehicle.id }}"
                                 {% if (log and log.vehicle_id == vehicle.id) or (selected_vehicle_id == vehicle.id) %}selected{% endif %}
-                                data-last-odometer="{{ vehicle.get_last_odometer(current_user.distance_unit) }}"
+                                data-last-odometer="{{ vehicle.get_last_odometer(vehicle.get_effective_odometer_unit()) }}"
+                                data-odometer-unit="{{ vehicle.get_effective_odometer_unit() }}"
                                 data-uses-tessie="{{ 'true' if vehicle.uses_tessie_odometer() else 'false' }}"
-                                data-tessie-odometer="{% if vehicle.tessie_last_odometer %}{% if current_user.distance_unit == 'mi' %}{{ (vehicle.tessie_last_odometer * 0.621371)|round|int }}{% else %}{{ vehicle.tessie_last_odometer|round|int }}{% endif %}{% endif %}">
+                                data-tessie-odometer="{% if vehicle.tessie_last_odometer %}{% if vehicle.get_effective_odometer_unit() == 'mi' %}{{ (vehicle.tessie_last_odometer * 0.621371)|round|int }}{% else %}{{ vehicle.tessie_last_odometer|round|int }}{% endif %}{% endif %}">
                             {{ vehicle.name }}
                         </option>
                         {% endfor %}
                     </select>
-                    <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">Last odometer: <span id="last-odometer">-</span> {{ current_user.distance_unit }}</p>
+                    <p class="mt-1 text-sm text-gray-500 dark:text-gray-400">Last odometer: <span id="last-odometer">-</span> <span id="odometer-unit-display">{{ current_user.distance_unit }}</span></p>
                 </div>
 
                 <div>
@@ -39,7 +40,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white mt-2">{% if log %}Ed
 
                 <div>
                     <label for="odometer" class="block text-sm font-medium text-gray-700 dark:text-gray-300">
-                        Odometer ({{ current_user.distance_unit }}) *
+                        Odometer (<span id="odometer-unit-label">{{ current_user.distance_unit }}</span>) *
                         <span id="tessie-odometer-badge" class="hidden ml-2 inline-flex items-center px-2 py-0.5 rounded text-xs font-medium bg-green-100 text-green-800 dark:bg-green-900 dark:text-green-200">
                             <svg class="w-3 h-3 mr-1" fill="none" viewBox="0 0 24 24" stroke="currentColor">
                                 <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"/>
@@ -164,9 +165,14 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white mt-2">{% if log %}Ed
     const usesTessie = selectedOption.getAttribute('data-uses-tessie') === 'true';
     const tessieOdometer = selectedOption.getAttribute('data-tessie-odometer');
     const lastOdometer = selectedOption.getAttribute('data-last-odometer');
+    const odometerUnit = selectedOption.getAttribute('data-odometer-unit') || '{{ current_user.distance_unit }}';
 
-    // Update last odometer display
+    // Update last odometer display and unit labels
     document.getElementById('last-odometer').textContent = lastOdometer || 0;
+    const unitDisplay = document.getElementById('odometer-unit-display');
+    const unitLabel = document.getElementById('odometer-unit-label');
+    if (unitDisplay) unitDisplay.textContent = odometerUnit;
+    if (unitLabel) unitLabel.textContent = odometerUnit;
 
     if (usesTessie && tessieOdometer) {
         // Show Tessie badge and make field read-only
diff --git a/app/templates/fuel/index.html b/app/templates/fuel/index.html
index 164a547..c85f78e 100644
--- a/app/templates/fuel/index.html
+++ b/app/templates/fuel/index.html
@@ -40,7 +40,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">Fuel Logs</h1>
                             {{ log.vehicle.name }}
                         </a>
                     </td>
-                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500 dark:text-gray-400">{{ "%.0f"|format(log.odometer) }} {{ current_user.distance_unit }}</td>
+                    <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500 dark:text-gray-400">{{ "%.0f"|format(log.odometer) }} {{ log.vehicle.get_effective_odometer_unit() }}</td>
                     <td class="px-6 py-4 whitespace-nowrap text-sm text-gray-500 dark:text-gray-400">
                         {{ "%.1f"|format(log.volume or 0) }} {{ current_user.volume_unit }}
                         {% if log.is_full_tank %}
diff --git a/app/templates/fuel/quick.html b/app/templates/fuel/quick.html
index 40b5468..28781e3 100644
--- a/app/templates/fuel/quick.html
+++ b/app/templates/fuel/quick.html
@@ -17,9 +17,10 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ _('Quick Fuel En
                     class="mt-1 block w-full rounded-lg border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-white text-lg py-3 focus:border-primary-500 focus:ring-primary-500">
                 {% for vehicle in vehicles %}
                 <option value="{{ vehicle.id }}"
-                        data-odometer="{{ vehicle.get_last_odometer(current_user.distance_unit) }}"
+                        data-odometer="{{ vehicle.get_last_odometer(vehicle.get_effective_odometer_unit()) }}"
+                        data-odometer-unit="{{ vehicle.get_effective_odometer_unit() }}"
                         data-uses-tessie="{{ 'true' if vehicle.uses_tessie_odometer() else 'false' }}"
-                        data-tessie-odometer="{% if vehicle.tessie_last_odometer %}{% if current_user.distance_unit == 'mi' %}{{ (vehicle.tessie_last_odometer * 0.621371)|round|int }}{% else %}{{ vehicle.tessie_last_odometer|round|int }}{% endif %}{% endif %}"
+                        data-tessie-odometer="{% if vehicle.tessie_last_odometer %}{% if vehicle.get_effective_odometer_unit() == 'mi' %}{{ (vehicle.tessie_last_odometer * 0.621371)|round|int }}{% else %}{{ vehicle.tessie_last_odometer|round|int }}{% endif %}{% endif %}"
                         {% if selected_vehicle_id and selected_vehicle_id|int == vehicle.id %}selected{% endif %}>
                     {{ vehicle.name }}
                 </option>
@@ -42,7 +43,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ _('Quick Fuel En
                 <input type="number" name="odometer" id="odometer" required step="0.1"
                        placeholder="{{ last_odometer or '0' }}"
                        class="block w-full rounded-lg border-gray-300 dark:border-gray-600 dark:bg-gray-700 dark:text-white text-lg py-3 pr-12 focus:border-primary-500 focus:ring-primary-500">
-                <span class="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 text-sm">{{ current_user.distance_unit }}</span>
+                <span id="odometer-unit-badge" class="absolute right-3 top-1/2 -translate-y-1/2 text-gray-400 text-sm">{{ current_user.distance_unit }}</span>
             </div>
             <p id="last-odometer-hint" class="mt-1 text-xs text-gray-500 dark:text-gray-400">
                 {% if last_odometer %}{{ _('Last') }}: {{ "{:,.0f}".format(last_odometer) }} {{ current_user.distance_unit }}{% endif %}
@@ -120,11 +121,16 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ _('Quick Fuel En
     const select = document.getElementById('vehicle_id');
     const option = select.options[select.selectedIndex];
     const odometer = option.dataset.odometer;
+    const odometerUnit = option.dataset.odometerUnit || '{{ current_user.distance_unit }}';
     const usesTessie = option.dataset.usesTessie === 'true';
     const tessieOdometer = option.dataset.tessieOdometer;
     const hint = document.getElementById('last-odometer-hint');
     const input = document.getElementById('odometer');
     const badge = document.getElementById('tessie-badge');
+    const unitBadge = document.getElementById('odometer-unit-badge');
+
+    // Update odometer unit display
+    if (unitBadge) unitBadge.textContent = odometerUnit;
 
     if (usesTessie && tessieOdometer) {
         // Show Tessie badge and auto-fill
@@ -140,7 +146,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ _('Quick Fuel En
         input.classList.remove('bg-gray-100', 'dark:bg-gray-600');
 
         if (odometer && parseFloat(odometer) > 0) {
-            hint.textContent = 'Last: ' + parseFloat(odometer).toLocaleString() + ' {{ current_user.distance_unit }}';
+            hint.textContent = 'Last: ' + parseFloat(odometer).toLocaleString() + ' ' + odometerUnit;
             input.placeholder = odometer;
         } else {
             hint.textContent = '';
diff --git a/app/templates/stations/prices.html b/app/templates/stations/prices.html
index 97d8df8..051424d 100644
--- a/app/templates/stations/prices.html
+++ b/app/templates/stations/prices.html
@@ -53,7 +53,7 @@ <h2 class="text-lg font-medium text-gray-900 dark:text-white">{{ _('Price Histor
 <script>
 document.addEventListener('DOMContentLoaded', function() {
     const ctx = document.getElementById('priceChart').getContext('2d');
-    const prices = {{ prices | tojson }};
+    const prices = {{ prices_json | tojson }};
 
     // Reverse to show chronological order
     const sortedPrices = prices.slice().reverse();
diff --git a/app/templates/vehicles/form.html b/app/templates/vehicles/form.html
index c7f0755..fd4d71c 100644
--- a/app/templates/vehicles/form.html
+++ b/app/templates/vehicles/form.html
@@ -43,6 +43,18 @@ <h2 class="text-lg font-medium text-gray-900 dark:text-white mb-4">Basic Informa
                     <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">Use "Hours" for tractors, ATVs, boats, etc.</p>
                 </div>
 
+                <div>
+                    <label for="odometer_unit" class="block text-sm font-medium text-gray-700 dark:text-gray-300">Odometer Unit</label>
+                    <select name="odometer_unit" id="odometer_unit"
+                            class="mt-1 block w-full rounded-md border border-gray-300 dark:border-gray-600 px-3 py-2 focus:border-primary-500 focus:outline-none focus:ring-1 focus:ring-primary-500">
+                        <option value="" {% if not vehicle or not vehicle.odometer_unit %}selected{% endif %}>Use account default ({{ current_user.distance_unit }})</option>
+                        {% for value, label in odometer_units %}
+                        <option value="{{ value }}" {% if vehicle and vehicle.odometer_unit == value %}selected{% endif %}>{{ label }}</option>
+                        {% endfor %}
+                    </select>
+                    <p class="mt-1 text-xs text-gray-500 dark:text-gray-400">Override the odometer unit for this vehicle. Useful when you have vehicles with different odometer units.</p>
+                </div>
+
                 <div>
                     <label for="fuel_type" class="block text-sm font-medium text-gray-700 dark:text-gray-300">Fuel Type</label>
                     <select name="fuel_type" id="fuel_type"
diff --git a/app/templates/vehicles/view.html b/app/templates/vehicles/view.html
index de7969a..28e1630 100644
--- a/app/templates/vehicles/view.html
+++ b/app/templates/vehicles/view.html
@@ -61,7 +61,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ vehicle.name }}<
                 </div>
                 <div>
                     <dt class="text-sm font-medium text-gray-500 dark:text-gray-400">Last Odometer</dt>
-                    <dd class="mt-1 text-sm text-gray-900 dark:text-white">{{ "%.0f"|format(vehicle.get_last_odometer(current_user.distance_unit)) }} {{ current_user.distance_unit }}</dd>
+                    <dd class="mt-1 text-sm text-gray-900 dark:text-white">{{ "%.0f"|format(vehicle.get_last_odometer(vehicle.get_effective_odometer_unit())) }} {{ vehicle.get_effective_odometer_unit() }}</dd>
                 </div>
             </div>
         </div>
@@ -83,7 +83,7 @@ <h1 class="text-2xl font-bold text-gray-900 dark:text-white">{{ vehicle.name }}<
     <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-4">
         <dt class="text-sm font-medium text-gray-500 dark:text-gray-400">Total Distance</dt>
         <dd class="mt-1 text-xl font-semibold text-gray-900 dark:text-white">{{ "%.0f"|format(stats.total_distance) }}</dd>
-        <dd class="text-sm text-gray-500 dark:text-gray-400">{{ current_user.distance_unit }}</dd>
+        <dd class="text-sm text-gray-500 dark:text-gray-400">{{ vehicle.get_effective_odometer_unit() }}</dd>
     </div>
     <div class="bg-white dark:bg-gray-800 rounded-lg shadow p-4">
         <dt class="text-sm font-medium text-gray-500 dark:text-gray-400">Avg. Consumption</dt>
@@ -284,7 +284,7 @@ <h2 class="text-lg font-medium text-gray-900 dark:text-white">{{ _('Tessie Statu
                 <dt class="text-sm font-medium text-gray-500 dark:text-gray-400">{{ _('Odometer') }}</dt>
                 <dd class="mt-1 text-sm text-gray-900 dark:text-white">
                     {% if vehicle.tessie_last_odometer %}
-                    {% if current_user.distance_unit == 'mi' %}
+                    {% if vehicle.get_effective_odometer_unit() == 'mi' %}
                     {{ "%.0f"|format(vehicle.tessie_last_odometer * 0.621371) }} mi
                     {% else %}
                     {{ "%.0f"|format(vehicle.tessie_last_odometer) }} km
@@ -314,7 +314,7 @@ <h2 class="text-lg font-medium text-gray-900 dark:text-white">{{ _('Tessie Statu
                 <dt class="text-sm font-medium text-gray-500 dark:text-gray-400">{{ _('Est. Range') }}</dt>
                 <dd class="mt-1 text-sm text-gray-900 dark:text-white">
                     {% if vehicle.tessie_battery_range %}
-                    {% if current_user.distance_unit == 'mi' %}
+                    {% if vehicle.get_effective_odometer_unit() == 'mi' %}
                     {{ "%.0f"|format(vehicle.tessie_battery_range * 0.621371) }} mi
                     {% else %}
                     {{ "%.0f"|format(vehicle.tessie_battery_range) }} km
@@ -556,7 +556,7 @@ <h2 class="text-lg font-medium text-gray-900 dark:text-white">Fuel Logs</h2>
                     <div>
                         <p class="text-sm font-medium text-gray-900 dark:text-white">{{ log.date|format_date }}</p>
                         <p class="text-sm text-gray-500 dark:text-gray-400">
-                            {{ "%.0f"|format(log.odometer) }} {{ current_user.distance_unit }} &middot;
+                            {{ "%.0f"|format(log.odometer) }} {{ vehicle.get_effective_odometer_unit() }} &middot;
                             {{ "%.1f"|format(log.volume or 0) }} {{ current_user.volume_unit }}
                             {% if log.is_full_tank %}<span class="text-green-600">(Full)</span>{% endif %}
                         </p>
diff --git a/config.py b/config.py
index b21258f..2a74e8a 100644
--- a/config.py
+++ b/config.py
@@ -4,7 +4,7 @@
 basedir = Path(__file__).parent.absolute()
 
 
-APP_VERSION = '0.12.2'
+APP_VERSION = '0.13.0'
 RELEASE_CHANNEL = os.environ.get('RELEASE_CHANNEL', 'stable')
 GIT_SHA = os.environ.get('GIT_SHA', '')[:7]  # Short SHA
 GITHUB_REPO = 'dannymcc/may'
diff --git a/migrations/versions/998cdb1497c6_add_odometer_unit_to_vehicles.py b/migrations/versions/998cdb1497c6_add_odometer_unit_to_vehicles.py
new file mode 100644
index 0000000..bbccddc
--- /dev/null
+++ b/migrations/versions/998cdb1497c6_add_odometer_unit_to_vehicles.py
@@ -0,0 +1,26 @@
+"""add odometer_unit to vehicles
+
+Revision ID: 998cdb1497c6
+Revises:
+Create Date: 2026-02-19 20:44:52.486701
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '998cdb1497c6'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table('vehicles', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('odometer_unit', sa.String(length=10), nullable=True))
+
+
+def downgrade():
+    with op.batch_alter_table('vehicles', schema=None) as batch_op:
+        batch_op.drop_column('odometer_unit')