MOUNTAIN DEW PICK-UP
Beat the Heavy Series.

SEMI TRUCK
Beat the California Cup.

SQUIRREL CAR
Beat the Light Series.

PREDATOR CAR
Beat the Sport Series with the Five-Oh car.

FIVE-OH CAR
Beat the Sport Series.

Adjust fog color
Select a non-series race. When the screen fades, hold L + R + C-Up + C-Down + C-Left + C-Right + Down and wait until the track selection screen has fully appeared. Then, press Right until an option to adjust the fog color appears.

Change screen position
During a single player race, hold L + R + Start on controller two and move the Analog-stick on that controller.

Mirrored series tracks
Select practice mode and choose the mirrored version of any track. Once on the track, exit and begin a race in series mode. The series track will now be the mirrored version.