Affalterbach loves nothing more than putting high-performance machinery through grueling development sessions, and the Nurburgring remains the go-faster division's favorite proving ground. Fresh spy photos reveal the facelifted CLE 53 Cabriolet pounding the tarmac at the Nordschleife, with this prototype showing visual traits that align with Merc's latest design language.
Up front, heavy camo wrap across the bumper hasn't s... (continue reading.…