Select the "Extras" option at the main menu, then choose the "Enter Code" selection. Then, enter one of the following codes to activate the corresponding cheat function:
Enter "GIVEALL" as a code to unlock all tracks.All cars and 1 million credits
Enter "GIEVEPIX" as a code to unlock all cars and get one million credits.1 million credits
Enter "GIVECASH" as a code.Big Rig
Enter "RAIDERS" as a code to unlock the Big Rig.Flatmobile
Enter "WOTKINS" as a code to unlock the Flatmobile.El Diablo
Enter "ELPUEBLO" as a code to unlock the El Diablo.Pimpster
Enter "RUTTO" or "BIGTRUCK" as a code to unlock the Pimpster.Rocket
Enter "KALJAKOPPA" as a code to unlock the Rocket.School Bus
Enter "GIEVCARPLZ" as a code to unlock the School Bus.
Get a 97% game completion in Career mode by getting first place in cups and stunts to unlock the Bullet GT.Insetta
Win the Race Finals to unlock the Insetta.Venom
Win the Derby Finals to unlock the Venom.High score in Stone Skipping event
To get a really good score in Stone Skipping, use the following steps. Do not start out going forward. Instead, start out going backwards until you hit the wall behind you. Go to the end of the diving board and launch your driver at about 40 degrees. Keep trying to get all either "Perfects" or "Greats" and you might be able to bounce over the walkway that blocks you from going any further (not the walkway directly next to where you launch your driver, but the one near the end).