private void getNewAirPressureFromUser()
        {
            Screen.Clear();
            Console.WriteLine("Enter vehicle's license number:");
            string licenseNumber = Console.ReadLine();

            try
            {
                r_Garage.AddAirPressure(licenseNumber);
            }
            catch (MissingVehicleException ex)
            {
                Screen.Clear();
                Console.WriteLine("{0}", Environment.NewLine);
                Console.WriteLine("{0}", ex.Message);
                Console.WriteLine("{0}", Environment.NewLine);
            }
        }