Find the highway and go to a spot near but not too close to an intersection. Find a racer and get them to have a Instant Challenge with you.. Set the finish line just behind the start line on the opposite side of the highway. Once the race starts immediately turn over the center of the highway and drive past the finish line. Do this five or ten times then do a race that is worth about $20,000. You will get a lot of money for the win. Note: This does not always work.