public void Compare(CarMake carmake2, string prefix)
        {
            var areEqual     = Equals(carmake2);
            var areEqualText = areEqual ? string.Empty : "not ";

            Console.Write(prefix);
            Console.WriteLine("is {0}the same vehicle", areEqualText);
            Console.WriteLine();
        }
 private bool Equals(CarMake carmake)
 {
     return(carmake != null && GetType() == carmake.GetType() && Model == carmake.Model);
 }