12 must-see videos from the Frankfurt auto show

This year's International Motor Show in Frankfurt was packed with sexy concepts and production models as well as a few fun surprises along the way.

Josh Miller/CNET

Our coverage of the 2013 Frankfurt auto show is just about wrapping up. Some of the highlights included the 2014 Porsche 918 Spyder making a brilliant, record-breaking debut, BMW bringing back some serious sporty intentions with the 4 Series, and Nissan unveiling one of its newest concepts, a smartwatch. And while cars, both production and concept, were the obvious main attraction, nothing could prepare us for Smart's electric bicycle.

Join us on a video tour of some of the hottest sights from the show.

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