2014 Audi e-tron Spyder Photos,Features,Specifications & Launch Following the concept of Quattro, Audi also unveiled at the Paris Motor Show on the Spyder e-tron, a concept common to preview the future R4 sports car. But compared to the previous e-tron, it is powered by a turbocharged 3.0-liter TDI with an output of 300 hp associated [...]