Audi Preparing R4 e-tron Roadster Concept for Paris
10 Sep 2010, 12:43 UTC · By: Andrei Tutu / Back in January, Audi introduced the Audi R4 e-tron concept, offering a little brother for the R8 e-tron. The two-seater will to give birth to a production vehicle, the sports car being slotted unde...