This is one of the cooler things in the game. You can do it any where on the game but it works best in Joy Riding. Start with a 2 player Joy Riding game and have one person pick the Halftrack and the other pick the Du Monde. When you start press pause and put in the cheats(yyyxxzz) for both players. Thenbring both vehecles onto a flat spot. Now with the Halftrack drive up to the side of the Du Monde and tip it on its side so the bottom is facing the front of the Halftrack. Then push repel sphere and the car will Fly. If it did'nt work try it again until the car is going 249 M.P.H and its going up. Now experiment around with the car, and if the car is upside down it will go up and ect.. You can also start with the ATV and then go up to a big animal like an elephant or camel and keep on running over it until the animal "kicks" you. Its hard but if you do it right you end up way in the sky.