Use the following trick to unlock the Warthog vehicle seen in the Halo series for Autovista mode (non drive-able). Unlock the other cars in the Autovista mode by completing their challenges selected while in that mode, ranging from completing races and passing a certain number of cars within a lap or two. For an easier time, it is recommended to switch to the Easy difficulty setting, as the game will turn off traction control and damage wear as well as turn on assisted braking on turns and steering for easier drifts. You will be driving fast cars that are difficult to control for beginners.