Cars with lasers attached. The Audi A2 electric concept brought this new technology to the show floor to help us envision the future of lighting design and efficiency. The A2 has light bars down its sides as well to show off animated LED turn signals and other lighting options on Audi's future green vehicles.

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With even suppliers focusing on plug-in electric vehicle technology and other green propulsion systems, this has truly been the year of the city car so far at Frankfurt. But the show isn’t over yet. We’ll be sure to bring you more future tech photos as more visions of our sustainable transportation future are unveiled in Germany this week.

+ Frankfurt Motor Show