OFF ROAD CHALLENGE
Go to the vehicle select screen and press the following buttons for the cars:
C-Right The Cruiser
C-Up Toyota 4x4 Monster
C-Left Thunder Bolt
C-Down The Punisher
To access the hidden tracks go to the track select screen:
Flagstaff: Hold down L and press left on the D-pad. You'll hear a confirmation tone. Then highlite the Mojave course on select screen and hold the Z button while pressnig A.
Guadalupe: Hold down R and press down on the joypad. You'll hear a confirmation tone. Highlight the Las Vegas course and hold the Z button while pressing A.
El Cajon: Hold L and R and hit up on the joypad. You'll hear a confirmation tone. Highlight the El Paso course, hold the Z button, and press A.