Unveiled at the North American International Auto Show in Detroit, the new 2016 Porsche Cayenne Turbo S is the most powerful SUV to ever come out of Stuttgart, Germany. This iteration of the Cayenne Turbo S is the first vehicle in its class to beat the 8-minute mark around the famed Nürburgring racetrack, stripping the title of the fastest SUV in the world away from Land Rover. Along with this improved performance come added interior amenities, including Alcantara, custom color schemes, and carbon-fiber interi…