Enable Daytona Super Car
Place first on all five tracks in Normal mode.

Mirror Mode
Hold X, Y, and Z while selecting a track.

Enable Uma the horse
Place first on all five tracks in Hard mode.

Enable Silver Uma
Select Uma and finish the game in Normal mode.
Rocket start
Hold the brake and accelerate buttons. While accelerating, keeping you RPMs
between 6500 and 7000. When the race starts let go of the break but keep holding
the accelerator. Get ready to fly by your opponents.