A lot of cars from a variety of manufacturers made their world debut at the 2009 Frankfurt Motor Show. Perhaps one of the most noteworthy automobiles to emerge out of Frankfurt was the Audi R8 E-Tron concept car. Yes, it is certainly flashy and eye appealing. But what may be more appealing to an increasingly eco-friendly world of car consumers, this car has no engine (WHAT?!!!). Yeah, I said it - NO ENGINE. This baby is powered by a feisty lithium ion battery packs, and supposedly runs completely off electrical energy. Impressive, eh?
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