AirBoardin' USA Bonus characters: A bonus character will be unlocked after completing one of the following goals: Earn an "A" rank on each level and track in "Street Work" mode. Earn a "S" rank on each level and track in "Street Work" mode. Complete each level and track in "Time Attack" mode within the time limit. Earn a "Perfect" rank on each level and track in "Coin" mode.