Audi S7: Is That You?

A swirly-camouflaged Audi S7 (or perhaps RS7) is making the rounds in Ingolstadt. Rumors have the S7 getting a new twin-turbo 4.0-liter V8 with the RS7 sporting the 5.2-liter V10. Power figures range from 400hp to a stonkin' 580hp. [CarMagazine]