Audi displays an uncompromising purist sport compact traction electric NAIAS Detroit 2010th The Audi e-Tron concept is 3.93 meters (154.72 inches) long and 1.78 meters (70.08 inches) wide, but only 1.22 meters (48.03 inches) high at two places, I just months after the start of the Audi-tron Concept at 2009 Frankfurt Motor Show, is now the second electric car concept of the brand with the four rings. In...