Has anyone seen that custom Hundyai (sp?) Tiberon with the twin engines? It has a motor in the front driving the front wheels like normal, and another identical motor in the rear hatch, complete with it's own trans, driving the rear wheels. The guy can shift one into reverse and the other into 1st gear and sit there and play tug of war, with all four tires smoking. I have no idea how he keeps them synched when he's driving straight ahead. I think my buddy has a vid of that, I'll see if I can get it.