Gain some speed in a car, then hold [Handbrake] until you have completed a full 180. Just before you complete the 180, release [Handbrake] and hold [Brake], which will spin you the next 180 degrees. However, some vehicles cannot do this. Also, with some vehicles, holding [Brake] will spin you back the way you came while using the handbrake, resulting in back-to-back 180s.