Audi shows off near-production R8 e-tron prototype

Filed under: EV/Plug-in, Audi, Frankfurt Motor Show When Audi unveiled the original e-tron Concept at the last Frankfurt Motor Show in 2009, a production version seemed to be nothing more than a glimmer in the very distant future. Two years later, it appears that the automaker has made plenty of progress in bringing an electric-powered R8 into the world. Yesterday in Frankfurt, Audi revealed a...