Crash Tag Team Racing Cheats for GameCube

I found this out yesterday. To defend yourself you can press the Y button. But if you are close to someone this cheat won't work because it will clash with someone
Note:it will slow you down.
I hope you like it.

Enter the following codes at the 'Main' Menu
Unlock Box Car Vehicle:
B, B, Y, X.
Remove the Maximum Top Speed on the Car:
B, B, Y, Y.
Unlock Side Characters have Chicken Heads:
A, B, B, X. Unlock Japanese Crash:
B, X, B, X.
Unlock Baby Crash Costume:
Collect ALL the Die-O-Ramas.

Unlock Nina Cortex:
Give her the keys at Midway.

Unlock Pasadena Opossum:
Give him one Power Crystal at Midway.

Unlock Third Tier Kart Weapons:
Spend 1 Power Crystal at Midway.

Unlock Von Clutch:
Give him 1 Power Crystal at Midway.
Unlock Crunch Bandicoot:
At Midway give him 2,500 coins.
Unlock N. Gin:
Give him Green Plutonium at Midway.