Type these in during game play.
  BIGBOTTOM
                        Bodywork Trashed
  BOYSFROMTHEBUSH
                        Grip-0-matic tires
  BUYOURNEXTGAME
                        Jelly Suspension
  CHICKENFODDER
                        Bouncy
  FUNNYJAM
                        Turbo Peds
  GIVEMELARD
                        Loads of money
  GOOGLEPLEX
                        Underwater Ability
  HAMSTERSEX
                        Blind Pedestrians
  IGLOOFUN
                        Hot Rod
  IHAVESOMESPAM
                        Lunar Gravity
  ILOVENOBBY
                        Peds Shown on Map
  INTHELOFT
                        Drugs
  ISLANDRULES
                        Vesuvian Corpses
  MOOSEONTHELOOSE
                        Pinball Mode
  NAUGHTYTORTY
                        Pedestrians Respawn
  RABBITDREAMER
                        Gravity from Jupiter
  RUSSFORMARIO
                        Pedestrian Electro-Bastard Ray
  SMALLUDDERS
                        Giant Peds
  SPAMFOREST
                        Instant Handbrake
  SPAMFRITTER
                        Free Repairs
  SPAMSPAMSPAMSPAM
                        Peds Glued to Ground
  SUPERHOOPS
                        Explosive Peds
  TRAMSARESUPER
                        Pedestrian Harvest
 
 

You have to type the cheats in slowly or the game won't register them and they won't work.

All Tracks and Cars (U.S. version):
At main menu (where you can choose track or cars), enter KEVWOZEAR. You will hear a clang to verify that it worked,
though it may take a few tries.

Hit L in game for a coordinate and a mile-counter display.

Holding down Z at the start line before the count down ends to pull away early. But you lose 1000 credits which you can make up
for by killing the marshal. (the "Z" key can also be used for a wheel spin)...

Zachary D., Jayme Green, Spazz, Katt, and Craig