Top 20 green cars we wish we could buy today, Number 16: Audi R-Zero

Audi reportedly has no plans to offer electric cars anytime soon. That's a shame, since as you can see from the picture of the R-Zero concept above, the German automaker is quite adept at creating mouth-watering EV designs. The thought of a Quattro all-wheel-drive electric car alongside the R10 diesel makes us truly hope that Audi has a change or heart.

There's another Audi for Number 15.