Mercedes-AMG's CLE 646 Spezialanfertigung broke cover about two months ago, but development isn't finished. The Affalterbach engineers are still putting their wildest CLE Coupe through its paces, as shown in a new spy video of the limited-run model tackling the Nürburgring.
Although the car looks largely production-ready, this particular prototype still wears several unpainted body panels, suggesting AMG hasn't quite wrapped up testing. The wide-body coupe looks menacing even in this unfinished state, while its flat-plane-crank V8 delivers an appropriately aggressive soundtrack as it attacks the Green Hell.
