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Associated Press
IMAGE DISTRIBUTED FOR SHELL - The Schluckspecht 4, vehicle No. 514, UrbanConcept, running on Diesel, competing for team Schluckspecht from University of Applied Sciences Offenburg, Germany, on the track during Day 1 of competition at the Shell Eco-marathon Challenge Europe at The Ahoy centre in Rotterdam, The Netherlands on Thursday, May 16, 2013. Teams from universities all over Europe have brought their energy efficient cars to compete through the three-day challenge. (Ermindo Armino/AP Images for Shell)

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