While choosing the car at the car selection screen, hold down the START button until the game opens the Transmission selection, then let go of the start button. It may only work for the Super Beginner Track. Note: if the car becomes a small thin rocket car as the confirmed car, it means the code works.
While selecting your transmission at the Transmission Selection screen, hold down the START button until the race starts. Note: The code is confirmed if you see a "TIME LAP MODE" on the screen at the Transmission Selection Screen.
Hold Start,press View button 3 Hold View button 4,press View button 1+2+3
To unlock the hidden vehicles, select "Super Beginner" course. Then, at the vehicle selection screen, hold down the Start button while choosing an automobile.