With the release of the Cayman GT4 RS, Porsche unveils its highest performance 718 series car ever. So far, we’ve seen only the official Nürburgring lap time of 7:09.3 and the leaked images, which suggest the forthcoming Cayman will be powered by a flat-six pushing more than 500 horsepower. Enhanced aerodynamics in the front splitter & exit venting mark it as a serious track-ready ride.