Retro Game Cheats for Grand Prix 3 (PC Games)
Effect: this will give you alternate cars
When:
outside of a race
How:
type 123456789qwerty (you'll hear a message if code entry is correct)
Submitted By:
Unknown
Effect: Unique car
When:
Menu screen
How:
Press Keys 1 Through To 9 Then Type '"QWERTY" If It Work You Should Hear David Coulthard
Submitted By:
Unknown