Driver: Parallel Lines

Pause the game and select the "settings" option. Then, select the "cheats" option and enter one of the following codes to unlock the corresponding cheat option, which can then be toggled on or off:

Invincibillity: IRONMAN
Indestructable cars: ROLLBAR
All vehicles: CARSHOW
Free garage: TOOLEDUP
Infinite nitro: ZOOMZOOM
All weapons in era: GUNRANGE
Infinite ammo: GUNBELT
Weaken the cops: KEYSTONE

You will notice there are more gaps let me know when you find out what they are Thanks.

Look on the newspapers blowing around the streets, taxi signs, the safe house dart board, and the safe house refrigerator door to see photos of the development team.

The Atari logo can be seen on a neon signs at Times Square.

The Reflections logo can be seen as graffiti on some walls.

Stuntman posters are visible on the walls of the 1978 safe house.

Atlus Racer - Beat the Game
Negotiator Vehicle - Beat the Game
Ram Raider - Beat the Game

Atlus Racer - Complete the Game
Negotiator Vehicle - Complete the Game
Ram Raider - Complete the Game
Then & Now (Era) Change Option - Complete the Game

Use this cheat for Unlimited Nitro on your vehicle.