static void Main(string[] args)
        {
            Car myNewCar = new Car();
            myNewCar.Make = "Chevrolet";
            myNewCar.Model = "Yukon";
            myNewCar.Year = 2004;
            myNewCar.Colour = "blue";

            //Console.WriteLine("{0} - {1} - {2} :$ {3}", myNewCar.Model, myNewCar.Make, myNewCar.Colour, determineMarketValue(myNewCar));
            Console.WriteLine("{0} - {1} - {2} :$ {3}", myNewCar.Model, myNewCar.Make, myNewCar.Colour, myNewCar.determinePrice());
            //double marketValueOfCar = determineMarketValue(myNewCar);
            Console.ReadLine();
        }