It's the supercar drag race of the year: can the sublime Ferrari F12 Berlinetta and Mercedes SLS Black Series overcome the searing pace of the Porsche 911 Turbo S over a standing kilometre? SUBSCRIBE to Autocar: http://smarturl.it/autocar Flat six plays V8 and V12 in the ultimate test of the latest and best supercars. Can the astonishing traction of the Porsche 911 Turbo S compensate for the 622bh
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