Bonus Cars:
Start a new race and select the "Begin Career" option. At the
"Register" screen, enter "Go Bears!" for Stock cars, or "Go Bruins!" for Formula One
Cars.

Change Car Color:
While racing, pause the game and go to the Race Strategy screen. >From here, press and hold L1 + L2
+ R1 + R2 + X + Circle + Select. >From here, press and hold L1 + L2 + R1 + R2 + X + Circle +
Select.

Master Options:
While racing, pause the game and go to Race Standings. Now press Circle + X (you
might have to do it once or twice.) An option screen will appear which allows
you to change the speed of your opponent, gas mileage, tire wear, and more!