Car

    - plate: String
    - paths: Path[]

Path

    - startDate: DateTime
    - positions: Position[]

Position

    - coordinate: LatLng
    - photos: Photo[]

Photo

    - data: Blob
    - cameraId: Int

Camera

    - serialNumber: String

Path activePath = car.getOrCreateActivePath();

car.getOrCreateActivePath();
car.addPositionToActivePath(LatLng coordinate);
car.addPhotoToLastPositionOfActivePath(Blob data);