McLarens X-1 One-off Unveiled at Pebble Beach:

Rumors of a unique McLaren came true today at Pebble Beach with the X-1, a special edition vehicle, based on a MP4-12C Even with one-offs, McLaren doesn’t play around, and the X-1 uses the same 3.8-liter V8 sourced from the MP4-12C. Twin turbochargers push the power...