Unlock Tache Telpan XSU-K0cc Racer:
At Vehicle selection screen hold R L triggers and press black, white, X, X, Y, and release R L. If you entered the code correctly, you will hear the sound of a jet taking off.
Use Same Vehicles In System Link:
By default the game does not let you choose the same vehicles when racing on a LAN. To remedy this, all players must hold down the Y button before selecting the vehicle selection screen.