According to the Porsche, the 4,784-pound, 500-horsepower Porsche Cayenne Turbo gets from zero to sixty in 4.4 seconds. The 3,219-pound, 385-hp 911 Carrera 4S with PDK takes 4.3 seconds to run the same distance. With such remarkably close acceleration times, Autocar wanted to see if the Cayenne Turbo could hang with the 911 around Millbrook's 1.39-kilometer Outer Handling Circuit. The answer: A lot better than expected. Follow the jump to watch Steve Sutcliffe run both Porsches ragged. Top tip, Steve!