Unlock all Tripods and Tracks:
 
You can unlock all of the tracks and tripods
by entering this code at the Main Menu. We had
to attempt this code a couple of time to get
it to work, so don't become discouraged if it
doesn't work the first time. From the Main Menu,
simply highlight the Vehicle Select options 
(do not enter the vehicle selection option). 
Press and hold X + Y and enter the following code.

UP, LEFT, DOWN, RIGHT (TWICE), UP, DOWN, RIGHT.

NOW, you may enter the Vehicle Slection option and
choose the best vehicles the game has to offer.


by unknown