private IndividualCar CreateNewCar()
        {
            var car = new IndividualCar {
                CarModel     = new CarModel(),
                CarSale      = null,
                CarFeatures  = new Collection <CarFeature>(),
                DateImported = DateTime.Now,
                Status       = Constants.CAR_AVAILABLE
            };

            _carRepository.Add(car);
            _carRepository.AddCarModel(car.CarModel);
            return(car);
        }