public void ExecuteNewVehicleCommand(Object obj)
        {
            AddVehicleController addVehicleController = new AddVehicleController();
            Vehicle vehicle = addVehicleController.AddVehicle();

            if (vehicle == null)
            {
                return;
            }
            var result = socket.AddVehicle(vehicle);

            if (result == false)
            {
                System.Windows.MessageBox.Show("Fehler beim Hinzufügen der Fahrzeuge!");
            }

            parent.restartVehicleCommand();
        }