From MotorTrend.com…..
Just a week after Mercedes-AMG announced its GT 63 S 4-Door (once again) became the quickest executive car around the Nürburgring, the brand shared its GT Black Series sports coupe is now the fastest road-legal production car around the famed German track. GT3 driver Maro Engel set an officially certified time of six minutes and 43.616 seconds around the nearly 13-mile-long version circuit.
