On the bike selection screen, press the R button to open up your options. The track will become extremely slippery. The camera zooms away from the bike. The camera zooms closer to the bike.
All bikes turn into rolling stones.
All of the landscape appears to be a wire frame. The speed of the race becomes even faster. Start to race. Quit any race at any time, and the game will count it as a win. That team member's face will now be on your bike.