The brutal GT2 RS is the chainsaw of the 911 lineup compared with the scalpel-like GT3. Its 700-hp twin-turbo flat-six drives the rear wheels through a seven-speed dual-clutch automatic for a claimed 2.7-second zero-to-60-mph time—conservative, we think—and powered this fastest-ever 911 to a record lap at the Nürburgring Nordschleife. Steering is laser direct, and the rear slides—controllably—if directed; the brakes are amazing, with no fade present during repeated high-speed stops on track.