We’ve seen it roll up during the credits for years, but somehow it’s impossible to remember what a key grip does on a movie set. We do know however that the 2014 Audi RS 7 Sportback will have some key grip of its own with Audi’s signature Quattro all-wheel-drive system. Combine that road-hugging with a 4.0-liter twin-turbo V-8 and you’ve got the makings of a serious performer. How serious? 553 horsepower serious. Holy best boy!