The ultimate Mercedes-Benz luxury SUV is the G500, also known as the Gelaendewagen in Europe. The G500 is powered by a 300-bhp 5.0L V8 and features a sophisticated 4WD system with 3 lockable differentials. M-B claims that the G500 can climb 80% grades and is laterally stable on 54% slopes. Only 1000-2000 G500's will be imported annually to the US. Pricing starts at $72,500.