IMAGE DISTRIBUTED FOR SHELL - Participants celebrate during the Awards Ceremony on the final day of competition at the Shell Eco-marathon Challenge Europe held at The Ahoy centre in Rotterdam, The ... more 
IMAGE DISTRIBUTED FOR SHELL - Participants celebrate during the Awards Ceremony on the final day of competition at the Shell Eco-marathon Challenge Europe held at The Ahoy centre in Rotterdam, The Netherlands on Sunday, May 19, 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) less 
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Associated Press
Sun, May 19, 2013 3:03 PM EDT