Audi first revealed its electric car project at the Frankfurt Motor Show in September last year with the R8 e-tron, an electric car based on the R8 and featuring four electric motors creating a quattro EV. Audi then went on to reveal their second e-tron at the Detroit Motor Show � the Audi R4 e-tron � which seems to preview a new R4 model from Audi and finally the latest � and most convincing e-tron � the Audi A1 e-tron at the Geneva Motor Show last week.But so far we�ve not seen any of the e-trons on the move. Audi admit that despite some ludicrous...