Even before McLaren released the final specifications on the brand-new MP4-12C, we knew that the British firm's supercar was fast, but if we are to believe this video that mysteriously popped up on Youtube, then the MP4-12C has a serious speed edge over some of its most famed rivals - at least in a straight line race. The video shows the McLaren MP4-12C clearly beating both the Ferrari 458 Italia and the Porsche 911 Turbo MkII [997] in a drag race believed to have taken place at the Portimao Circuit in Portugal. You can watch the short clip along with a couple more fresh videos released by McLaren right after the jump.Read more »