Start the game, then go to career,missions,obsticle course. HUH?? Trick: Go back, then 
go right (BEHIND The EZ Sigh At Start) You will see a railroad track. go up the right hill 
and then drive on the railroad(The Same Direction As When you started the Mission) Keep 
going, after a few seconds, you will end up in the same place! Tresure: Restart The Course, 
Go Straight Until you see the first 2 trees to your right. go through them. You will see 
a "ditch" with rocks. go to right, you might see 3 EDGE Rocks on the side of the cliff. 
To to the third one, and $250 Dollers Are In Your Hands! Sorry If these cheats don't work.