El Cajon Track

At the Track Selection screen, hold Up and press L and R at the same time. You should hear an air
wrench if done correctly. Select El Paso, hold Z and press the accelerator button. 

                               Flagstaff Track 

At the Track Selection screen, hold Left and press L. You should hear an air wrench if done
correctly. Select Mojave, hold Z and press the accelerator button. 

                              Guadalupe Track 

At the Track Selection screen, hold Down and press R. You should hear an air wrench if done
correctly. Select Vegas, hold Z and press the accelerator button. 

                               Monster Trucks 

At the Car Select screen, press the respective buttons to switch between the default and monster
truck cars. 

                                Car - Button

Punisher - C-DOWN 
The Crusher - C-RIGHT 
Thunderbolt - C-LEFT 
4x4 Monster - C-UP