This is a tough one, but if done correctly, your mouth will hit the floor. In multiplayer mode, select the landstalker.(note,it is only available in certain levels).Get in it, and locate a place with a level surface.Then you will hold down both L2 and R2, and tap the X button at the same time. The vehicle should jump up into the air only once, and then it should crouch down. keep holding down the L2 and R2 buttons, but keep tapping X with a normal beat. Wait until the vehicle crouches down to the ground, then immediately tap the triangle button. If performed correctly, the vehicle, still on the ground, should rise up. The very millisecond all four legs are off the ground, tap the triangle button, and you will jump 50+ feet off the ground.