what you do is put a weight in the top of the wheel, and balance it so it points strait up, so when it is pushed a little foward, the weight makes the tire roll foward, so it goes uphill. it wasnt done on a computer. and if your wondering about the windshild wipers, they come on automaticly when they fell wetness. so when the fluid was sprayed, they detected it, and they turned on.Originally posted by: ZEXCougar
Actually, after watching it again... It was done on a computer. Look at the tires that bump into each other. There is no way that those could go uphill like that. You can even see them almost stop and then magically start up again!