Calm down; although reports circulating the internet would lead you to believe otherwise, you’re not looking at a Lamborghini Murcielago Superleggera. This is, in fact, a mule for the 2008 model year Murcielago LP640; it's in line for a few aerodynamic updates, but no more power, Autocar has discovered, and certainly no weight-saving measures.Autocar's spy photographers took these photographs of a mysterious bespoilered Murcielago earlier this week at the Nurburgring's Nordschleife – and it seems that they weren't the only ones. Photographs of this car have been flying around on the internet, alongside claims that they are proof that Sant'Agata is working on a lightweight Superleggera version of its 640bhp flagship supercar. It seems that they're no such thing. Our sources at Lamborghini have advised that the car is a standard Murcielago LP640 in every way barring its aerodynamics. The wing on the back of the car is part of the maker's optional track aero package, and is available on any LP640; and the reason that the doors are unpainted is that they've been retrofitted to the car recently.The factory has made a few changes to the design of the Murcielago's floorplan in order to better manage the airflow underneath the car, to reduce lift at high speeds, and therefore to improve high-speed stability. "There will be no significant power increase for the 2008 LP640," an insider said, " and there are no plans to produce a stripped-out version."