Ending bonuses
Successfully complete the game to unlock the Free Run mode (no vehicles on the road), Free Run Twin mode (two player Free Run), and Credits options.
Face Off option
Successfully complete championship mode once to unlock face off mode against the Roadster.
Roadster
Defeat the Roadster in face off mode to unlock it and another face off race against another car.
Towtruck
Play in championship mode until you unlock Face Off number 2 in the special options screen. Defeat the Towtruck once to unlock it.
Increase boost
Drive on the wrong side of the road to keep increasing your boost. This can also be done by driving in the center of a double lane.
All racers
Press R2(3), L1, Triangle, L2(3), R1, Square at the title screen.
Saloon GT
Beat this car in Face Off 3.
Bus
Beat this car in Face off 4.