Press Up(2), Down(2), Left, Right, Left, Right, B, A during game play to spawn a medpak that will restore 25 points of health.
When you get the jeep, use turbo towards a wall. Press (Y) to get out before you hit the wall. If done correctly, when the jeep flips you will also flip. Note: You may get hurt as well.
Press Start, Up(6), Down, Start, Up(3), Down during game play.