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COMMERCIAL IMAGE - In this handout image provided by Shell via AP Images, Takaaki Fukui of Team Clean Diesel from the Hyogo Prefectural Tajima Technical Institute during registration day for the Shell Eco-marathon energy efficiency challenge at Sepang International Circuit in Sepang, Malaysia, Wednesday, July 6, 2011. Teams from all over Asia arrived for test day while their cars were put through technical and safety checks to make ready for the ensuing challenge. (Alwin Lam Hoe Chuan/Shell via AP Images)