FILE - In this May 13, 2011 file photo, an employee of Toyota Motor Corp. cleans the "Prius a," or "Prius alpha," a revamp of its popular gas-electric hybrid, during its launch in Tokyo. Toyota Motor ... more 
FILE - In this May 13, 2011 file photo, an employee of Toyota Motor Corp. cleans the "Prius a," or "Prius alpha," a revamp of its popular gas-electric hybrid, during its launch in Tokyo. Toyota Motor Corp. said Wednesday, June 1, 2011, May U.S. car and truck sales fell 33 percent over the same month last year as the automaker was hit by earthquake-related shortages. less 
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Associated Press | Photo By Koji Sasahara, file
Wed, Jun 1, 2011 2:41 PM EDT