Once the World Class League is unlocked, you will be required to make a profit of $200,000. Go to this event, and spectate Air Trauma. Bet on Crystal; the odds are 20:1. At the very beginning of the race, cheer for Crystal, and she will get a full nitrous bar. Make sure the person in front of her loses their nitrous every time they gain it by booing them. Keep doing this until Crystal has passed everyone including the leader. If she wins the race at the end of sixteen laps, you will win six million dollars.