COMMERCIAL IMAGE - Team Hot Wheels green driver Greg Tracy poses prior to attempting to set the Guinness World Records Title by successfully racing through a 60-foot-tall double vertical loop at the X Games Los Angeles on Saturday June 30, 2012 in Los Angeles. (Photo by Kent Horner/Invision for Mattel/AP Images)

Associated Press
COMMERCIAL IMAGE -  Team Hot Wheels green driver Greg Tracy poses prior to attempting to set the Guinness World Records Title by successfully racing through a 60-foot-tall double vertical loop at the X Games Los Angeles on Saturday June 30, 2012 in Los Angeles. (Photo by Kent Horner/Invision for Mattel/AP Images)
COMMERCIAL IMAGE - Team Hot Wheels green driver Greg Tracy poses prior to attempting to set the Guinness World Records Title by successfully racing through a 60-foot-tall double vertical loop at the X Games Los Angeles on Saturday June 30, 2012 in Los Angeles. (Photo by Kent Horner/Invision for Mattel/AP Images)
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