Truck and School Bus
Start the game. At the main menu screen, go to the "Extra" option and select "Passwords." Type in the cheat code "ELPUEBLO" and you will then be able to select the truck at the vehicle select screen. If you want to drive the school bus in FlatOut 2, then type in the cheat code "GIEVCARPLZ" and it will become unlocked for use.
Ice Cream Van and Flatmobile Car
First, select "Extras" at the main menu and go to the "Passwords" option. To unlock the ice cream van, you must enter the cheat code "RAIDERS." If you want to drive the flatmobile car, enter the cheat code "WOTKINS" at the "Passwords" screen.
Rocket and Pimpster Cars
As with the other cheats, go to "Extras" on the main menu screen and select the "Passwords" option. If you want to unlock the rocket car, enter the cheat code "KALJAKOPPA." The pimpster car can be used once you have typed in the cheat code "RUTTO" at the "Passwords" screen.
All Cars, 1 Million Credits and All Tracks
There are two more cheat codes that will unlock everything in the game and give you 1 million credits to spend. To unlock all the cars, and boost your credits level to 1 million, enter the cheat code "GIVEPIX" into the "Passwords" screen. To be able to drive on all the tracks, type in the cheat code "GIVEALL" at the "Passwords" screen.