Enter the "Options" menu and select "Cheat Code". Then, enter one of the following codes to activate the corresponding cheat function:

All events

Press Start, Left, Select, Right(2), Triangle, X, Square, Start, R, Down, Select to unlock all events.

All cars

Press Up(4), Left, Down, Up, Right, Down(4) to unlock all cars.

All weapons

Press Up, Right, Left, Down, Start, Start, L(2), Square, Triangle, Select, R to unlock all weapons.

All vinyls

Press Triangle, Square(4), Triangle(2), Square(4), Triangle to unlock all vinyls.