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Associated Press
IMAGE DISTRIBUTED FOR SHELL - The Urban One, vehicle No. 603, UrbanConcept, running on Hydrogen, competing for team Ensem Eco Marathon (E2M) from ENSEM, France, is moved to the start line before Day 1 of competition during the Shell Eco-marathon Europe at The Ahoy centre in Rotterdam, The Netherlands on Friday, May 17, 2013. Teams from universities all over Europe have brought their energy efficient cars to compete in the challenge. (Bas Czerwinski/AP Images for Shell)

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