How do you communicate a car's zero-emission technology? Focus on its "invisible" impact on the environment by making the car itself invisible. Using LED lights and a camera which reflected a live feed, an invisible Benz took to German streets to wow onlookers.
The car runs on F-cell technology, and while its invisibility is dependent on your distance from the car, the effect is still cool enough to make you look twice.
Along with Coke's 'Hands,' the work won the Outdoor Grand Prix at Cannes 2012, lauded for leveraging technology for a real creative use, not just to show off. For more on the effort and Cannes judging, check out our Cannes 2012 coverage.