7 of the best concepts from the Frankfurt Auto Show

The 2015 Frankfurt Auto Show just wrapped up and along with the all-new production cars that made their global debut in Germany, there were a handful of noteworthy concepts cars as well. While certainly disparate, there were some common threads: electric powertrains and light weight construction Without further adieu, in no particular order, here are the best concept cars from the Frankfurt Auto Show. See also: Porsche and Audi take on Tesla with two gorgeous electric car visions Porsche Mission...