Forget those fancy overpriced SUVs that never see anything but paved roads--these 4x4s are all about tackling the toughest terrain Mother Nature can dish out. It's time to shift into 4-LO and throw mud in 16 new locations that take you from the dry heat of the desert to ice-capped mountaintops. New technology, more trucks that are totally customizable, and an awesome array of challenges keep you behind the wheel testing your skills and seeing if you have what it takes.