Audi A1 E-Tron

S1 E3: At first glance, the Audi A1 on this episode of Go Green seems to be an ordinary small city car, but it's actually quite special. It's driving almost without any emission. Plus: Spectacular design, unusual proportions and innovative ideas - the new Hyundai Veloster is one of the most extraordinary series cars of late. And: The Porsche Panamera S Hybrid combines driving fun with ecology.