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Associated Press
IMAGE DISTRIBUTED FOR SHELL - The PAKS, vehicle No. 519, UrbanConcept, running on Gasoline, competing for team SKAP from Warsaw University of Technology, Poland races during Day 2 of competition at the Shell Eco-marathon Europe at The Ahoy centre in Rotterdam, The Netherlands on Saturday, May 18, 2013. The car won first prize in the Gasoline category. Teams from universities all over Europe have brought their energy efficient cars to compete in the challenge. (Patrick Post/AP Images for Shell)

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