private static void StopFilling(CarPictureBox car, FuelDispenserView fuelDispenser)
        {
            var carView = car.Tag as CarView;

            if (carView.FuelRemained > carView.TankVolume)
            {
                carView.FuelRemained = carView.TankVolume;

                var fuelSurplus = carView.FuelRemained - carView.TankVolume;
                fuelDispenser.ReturnFuelToTank(fuelSurplus);
            }

            car.IsFilling = false;
            car.IsFilled  = true;
            fuelDispenser.CarsInQueue--;
            fuelDispenser.IsBusy = false;
        }