public static new List <string> GetQuestions()
        {
            List <string> questionsToUserFuelVehicle = FuelVehicle.GetQuestions();
            List <string> questionsToUserCar         = Motorcycle.GetQuestions();

            foreach (string str in questionsToUserCar)
            {
                questionsToUserFuelVehicle.Add(str);
            }

            return(questionsToUserFuelVehicle);
        }
        public static new List <string> GetQuestions()
        {
            List <string> questionsToUserElectricVehicle = ElectricVehicle.GetQuestions();
            List <string> questionsToUserMotorcycle      = Motorcycle.GetQuestions();

            foreach (string str in questionsToUserMotorcycle)
            {
                questionsToUserElectricVehicle.Add(str);
            }

            return(questionsToUserElectricVehicle);
        }