Unlockable classes:
To unlock the 100cc class races, win all cups in the 50cc class races.
To unlock the 150cc class races, win all of the cups in the 100cc class races.
Special ability:
To unlock a character’s special ability, beat the time trial for that character.
Drive through fence glitch:
At a certain part of Easter Land you can drive through the fence. Hit the end of the fence to perform a big jump.