Unlock Rapier class:
Highlight the one player option on the menu screen. Hold R2 + L2 + Left + Start + Select, then press X to select the new option. The Rapier class is now available.

Unlock Ignore lap:
Use the one of the air brakes to steer hard to one side and turn 180 degrees while crossing the finishing line. If you cross the finish line backwards, the game will ignore your lap and allow you to race it again.

Unlock Turbo start:
Place the red bar on the second line from the end when the announcer says "Go". Begin to accelerate when the orange light appears, when the announcer says "One" to place the red bar in this position.

Unlock Secret track:
Highlight the one player option on the menu screen. Hold R1 + L1+ Right + Start + Circle + Square, then press X. A secret track called Firestar will be available at the bottom of the track list.