static void Main(string[] args)
{
Console.WriteLine("***** Method Group Conversion *****\n");
Car c1 = new Car();
c1.RegisterWithCarEngine(CallMeHere);
Console.WriteLine("***** Speeding Up *****");
for (int i = 0; i < 6; i++)
c1.Accelerate(20);
c1.UnregisterWithCarEngine(CallMeHere);
for (int i = 0; i < 6; i++)
c1.Accelerate(20);
Console.ReadLine();
}