Change your player name to the following by clicking "New" in the player selection screen.

Cheats marked with *NO SCORE* will disable race result monitoring and score. You cannot unlock new vehicles with these enabled (for obvious reasons).

Code Result
Showme Cops - Displays all Police Units on the map. *NO SCORE*
Big Bus Party - All traffic vehicles are city busses. *NO SCORE*
Tiny Car - All traffic vehicles are compact cars. *NO SCORE*
amizdA eoJ - All traffic vehicles drive around IN REVERSE.
Jet Planes - All traffic vehicles are Air Planes. *NO SCORE*
Warp Eleven All - AI is 10x faster. *NO SCORE*