private MotorCycle AddMotorCycle()
        {
            string regNr          = CheckRegNr();
            string color          = ui.AskForString("Please enter the color of the vehicle!");
            int    nrOfWheels     = ui.AskForInteger("Please enter the number of wheels that the vehicle has!");
            double cylinderVolume = ui.GetCylinderVolume();

            Console.Clear();
            ui.Print($"a vehicle of type: Motor cycle that has the Register number: \u0022{regNr}\u0022 has parked in the garage");
            return(handler.CreateMotorCycle(regNr, color, nrOfWheels, cylinderVolume));
        }