On the level, "Harbor," there is a glitch where you can float in midair. When you first start the level, you are in the back of all the cars. When you start going, you have to turn right, and then right again. Then, you jump off a ramp. After you jump off and you're on the ground again, go forward a little more. You'll notice that there are some boats to the right side. Using a fast car, face one of the boats from a distance and using your Turbo, just drive straight and get right on top of one. There is an "Invisible" box around the boats and when you're on them, it appears as if you were floating. Look at your car from a side view (L1 or L2) and you'll see it perfectly.