18 Wheeler American Pro Trucker (Cheat Game)

Bonus parking levels:
Successfully complete each of the four parking levels to unlock 
an additional parking level. Successfully complete the bonus 
parking level to unlock a sixth parking level. 

Nippon Maru:
Successfully complete arcade mode with all four characters. 

Lizard Tail:
Successfully complete the game with all five trucks (Asphalt Cowboy, 
Stream Line, Long Horn, Highway Cat, and Nippon Maru).

Bonus trailers:
Successfully complete 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). 

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