Toyota Prius

In this photo made Dec. 27, 2009, unsold 2010 Prius sedans sit at a Toyota dealership in Lakewood, Colo. Toyota Motor Corp. has been hit by over 100 complaints in the U.S. and Japan about brake problems with the popular Prius hybrid, the latest in a spate of quality troubles for the automaker as it grapples with massive global recalls. (AP Photo/David Zalubowski)