public void Bad()
{
Ferrari f = new Ferrari();
f.Run();
f.OpenAirConditioning();
Murat131 m = new Murat131();
m.Run();
}
public void Bad()
{
Car car = new Ferrari();
car.Run();
car.OpenAirConditioning();
car = new Murat131();
car.Run();
//Exception
car.OpenAirConditioning();
}