Making its debut today at the 2012 Paris Motor Show, McLaren says that the production version of the P1 have a power-to-weight ratio of over 600-hp per ton, suggesting, if the P1 weighs less than the MP4-12C, a total output of around 720-hp. McLaren hasn’t released any details on the powertrain of the car or any performance figures, but the car is expected to include some type of hybrid setup.