All tracks:
     At  the  cheat  menu  in  the player profile, enter TraxAhoy as a
cheat code.

All Sponsors:
     At the cheat menu in the player profile, enter uDunGud as a cheat
code.

Get 75.000 credits:
     At  the  cheat menu in the player profile, enter !MegaWedge! as a
cheat code. 


Vehicles obtained by completeing P2P championships in classic mode

Complete the following to unlock the vehicles listed:

Chimera (truck):   Complete P2P with the truck on expert difficulty.
Goliath (truck):   Complete P2P with the truck on normal difficulty.
Fireball (truck):  Complete P2P with the bike on expert difficulty.
Hurricane (buggy): Complete P2P with the buggy on normal difficulty.
Renegade (buggy):  Complete P2P with the ATV on expert difficulty.
Samurai (ATV):     Complete P2P with the ATV on normal difficulty.
Storm (buggy):     Complete P2P with the buggy on expert difficulty.