Fog: [Submitted by:Luggs]
At the cheat menu, press R2, R1, X, Square(2), Circle to unlock the fog option.

Big head mode:
At the cheat menu, press Triangle, Square(2), L2, L1, R2 to unlock the big head mode option.

Infinite continues:
Successfully complete season mode to unlock the infinite continues option at the cheat menu.

Jump option:
Successfully complete last man standing mode to unlock the jump option at the cheat menu.

Thick fog and New York track:
Successfully complete demolition mode on the easy, medium, and hard difficulty settings to unlock the thick fog and New York track options at the cheat menu.

Rocket wheels and Boston Big Dig track:
Successfully complete block your opponent mode on the easy, medium, and hard difficulty settings to unlock the rocket wheels and Boston Big Dig track options at the cheat menu.

No time out and Moon track:
Successfully complete time trial mode on the easy, medium, and hard difficulty settings to unlock the no time out and Moon track options at the cheat menu.

Night drive and Alpine Raceway track:
Successfully complete lock-on mode on the easy, medium, and hard difficulty settings to unlock the night drive and Alpine Raceway track options at the cheat menu.

Death car and Miami track:
Successfully complete simulation mode to unlock the Death car and Miami track options at the cheat menu.

Driving 101 FMV sequence: [Submitted by:Luggs]
Successfully complete all Driving 101 options to unlock the Driving 101 FMV sequence.