The Audi R8 E-Tron Is The Silent Ghost Of The Nürburgring Patrick George6/10/15 7:00pm5918EditPromoteGo to permalink No revving engine. No cracking exhaust noise. No flames. Just tire noise and displaced wind. This is what you get when you watch the electric Audi R8 E-Tron lap the Nürburgring. It’s a silent ghost that haunts the Green Hell.