Perfection. Reference. Quintessence. This is how you sum up in three words what the McLaren MP4-12C represents in the world of supercars. Powered by a 3.8 litre twin-turbo V8 that develops 616 hp in the Spider, sent to the rear wheels via a 7-speed doubleclutch automated gearbox, this stunning piece of English engineering coaxes its owner to carve racetracks on Sundays, and its hydraulically controlled suspension will coddle him on the drive back home. And now the hard decision: hardtop coupe or the new Spider…