Get Monster Truck Use single race mode and the hard difficulty to finish all 36 tracks to unlock the monster truck Pro class Veichles, Unlimited Finish all nine tracks in single race for pro class. Then the next eighteen for unlimited class This Cheat/Hint submitted by Mcleraon on Wednesday, September 5, 2001 at 15:39:42 Get Unlimited Class Trucks use single race mode and finish the first 27 tracks Get Dodge T-Rex In the Power division finish the 4th season of career mode Get Rod Hall Hummer Get 1st in all division's of career mode Get Humvee Get 1st in the first 3 seasons of career mode Get Dodge Durango In the speed division finish 1st in the 4th season Special vehicles To unlock special vehicles you have to beat different seasons of the career mode.  There are five seasons.  You will unlock an Army Humvee, Rod Halls red Humvee, A Shelby Durango, And a 6x6 Dodge pickup