Go to the top of the white line squiggle hill on the map. The back of your car should be facing down that hill. In front of you will be a yellow house with vines by the door. Go down the hill on the left-hand sidewalk. If done correctly, your car will fall down under the sidewalk. It appears as if you are in the sky. Then, your car will be back where you started. Note: This may take several attempts and works well with any flat type of car (Panoz Gtr-1 recommended).