The Kingdom of Quattro pulled the sheets off of the sinister coupe at this year’s Geneva Motor Show, and our jaws have been on the floor ever since. Under the hood sits a tweaked 4.2-liter V8 with 450 horsepower at the crank. The mill is bolted to none other than the Audi Quattro all-wheel drive system, complete with a new torque-vectoring rear diff.
Automobile hasn’t gone so far as to name a source for the rumors, which leads us to take this one with a Q7-sized grain of salt. Still, if it were true, we may have our sticky paws on an RS5 by summer 2012, right around the same time the refreshed A5 is scheduled to hit the U.S. Keep your fingers crossed and your hopes down.