18 WHEELER: AMERICAN PRO TRUCKER UNLOCKABLES
Bonus parking levels
Finish each of the four parking levels to unlock an additional parking level. Finish the bonus parking level to unlock a sixth parking level.
Nippon Maru
Finish arcade mode with all four characters.
Lizard Tail
Finish the game with all five trucks (Asphalt Cowboy, Stream Line, Long Horn, Highway Cat, and Nippon Maru).
Bonus trailers
Finish arcade mode with all four characters to unlock two bonus trailers in score attack mode, versus mode, and arcade mode (if the Nippon Maru is selected).
Bonus parts
In arcade mode, pick any truck. Get to your destination ahead of your rival , then complete the bonus parking mini-game to win bonus parts. REMEMBER: This works on any destination.