When
McLaren Automotive launched a year ago with the MP4-12C coupe, enthusiasts of high-performance supercars knew it was only a matter of time until the boys from Woking would chop off its top and create a roadster. Following the teaser that came on Friday, that time has finally come with the full presentation of the new 12C Spider. The race-bred roadster packs the same 616-horsepower, twin-turbo V8 as the coupe on which it's based, but with one vital difference: a three-piece retractable hard-top that lets its exhaust note in.