18 Wheeler: American Pro Trucker Cheats (GameCube)

Beat the first four parking levels to unlock a new parking level.  Beat the first extra
level and you'll unlock a second one as well.

To unlock extra trailers, beat the game with all four characters in Arcade Mode.

Beat the game on any difficulty with all 4 original trucks and you'll get sweet new rides
for the different modes and a new driver to boot.

Beat the game with all of the trucks (including Nippon Maru) to unlock Lizard Tail.

You can effectively draft behind trucks your size giving your truck a slight boost in
speed.

You can earn bonus parts by completting the parking mini-game after beating your rival in
any Arcade destination race.

Beat Arcade Mode with all characters to unlock Nippon Maru.