first commit

lib/models/vehicle.dart

@@ -0,0 +1,48 @@
+class Vehicle {
+  final String id;
+  final String make;
+  final String model;
+  final String color;
+  final String licensePlate;
+
+  Vehicle({
+    required this.id,
+    required this.make,
+    required this.model,
+    required this.color,
+    required this.licensePlate,
+  });
+
+  String get displayName => '$color $make $model ($licensePlate)';
+
+  Vehicle copyWith({
+    String? make,
+    String? model,
+    String? color,
+    String? licensePlate,
+  }) {
+    return Vehicle(
+      id: id,
+      make: make ?? this.make,
+      model: model ?? this.model,
+      color: color ?? this.color,
+      licensePlate: licensePlate ?? this.licensePlate,
+    );
+  }
+
+  Map<String, dynamic> toJson() => {
+        'id': id,
+        'make': make,
+        'model': model,
+        'color': color,
+        'licensePlate': licensePlate,
+      };
+
+  factory Vehicle.fromJson(Map<String, dynamic> json) => Vehicle(
+        id: json['id'] as String,
+        make: json['make'] as String,
+        model: json['model'] as String,
+        color: json['color'] as String,
+        licensePlate: json['licensePlate'] as String,
+      );
+}