Cheat mode (player name):
Select the "New" option on the player selection screen:

Result - Name:

All airplane traffic - Jet Planes
All city bus traffic - Big Bus Party
All compact car traffic - Tiny Car
Faster AI - Warp Eleven
Police displayed on the map - Showme Cops
Bullet in cruise mode to drive a generic light car - vasedanl
Cadillac in cruise mode to drive a generic car - vasedans
Cadillac in cruise mode to drive a yellow cab - vataxi
City Bus in cruise mode to drive a Diesel - vadiesels
City Bus in cruise mode to drive a mini-jet - vaboeing_small
Ford F350 in cruise mode to drive a delivery truck - vadelivery
Ford F350 in cruise mode to drive a pickup truck - vapickup
Ford F350 in cruise mode to drive a van - vavan
In cruise mode to drive the bus with a new color - vabus
Mustang GT in cruise mode to drive a black limo - valimoblack
Mustang GT in cruise mode to drive a random limo - valimo
Mustang GT in cruise mode to drive a white limo - valimoangel
VW Bug in cruise mode to drive a VW Rabbit - vacompact
Traffic drives in reverse - amizdA eoJ

Cheat mode (in-game):
Hold [Ctrl] + [Alt] + [Shift] + [F7] during game play in single player mode until a prompt appears. Then, enter one of the following codes to activate the corresponding cheat function.

Result - Code:

No damage - /nodamage
Enable damage - /damage
Airplanes becomes UFOs - /ufo
Bridge very quickly - /bridge
Cars in traffic have no friction - /slide
Traffic will not crash- /nocrash
Low gravity - /grav
Player's car has no friction- /puck
Sky spins - /dizzy
Toggle police radar - /fuzz
Train becomes line of airplanes - /swap
Use horn to shoot mailboxes - /postal
Fast commentary - /talkfast
Slow commentary - /talkslow
Large people - /big
Small people - /tiny
Disable smoking tires - /nosmoke
Enable smoking tires - /smoke

View damage:
There is a damage meter in almost all of the cars . You must have the view set to "In-Car", with the dashboard showing. The meter has yellow to the left and red on the right. The meter goes up as you crash into objects. In most cars, except the Panoz Roadster, it will be in the lower left of the dashboard.

Invisible car:
Press [View] to select the furthest view. Then, press D to return to the in-the-car-camera. Type wvvww to remove the car, leaving only the shadow in the view.

Wheels only:
Select the Panoz AIV Roadster, then press D followed by V during game play. Press [Esc] to restart the race and only the wheels of your car will be displayed.

Drive 999 mph:
Select single player mode and choose a big car. Start the game, go to any alley, get wedged between two walls, and accelerate. If done correctly, you will reach 999 mph.

Make cars slide without touching them:
Enable the /nocrash and /postal codes. Then, use your horn to shoot mailboxes at cars.