FILE - In this June 22, 2012 file photo, Tesla workers cheer on one the first Tesla Model S cars sold during a rally at the Tesla factory in Fremont, Calif. A healthier economy and more

 

              FILE - In this June 22, 2012 file photo, Tesla workers cheer on one the first Tesla Model S cars sold during a rally at the Tesla factory in Fremont, Calif. A healthier economy and more
FILE - In this June 22, 2012 file photo, Tesla workers cheer on one the first Tesla Model S cars sold during a rally at the Tesla factory in Fremont, Calif. A healthier economy and more new model introductions should push U.S. auto sales above the 15 million mark in 2013, predicts an auto industry research firm. The Polk research firm says auto sales should continue to lead the country's economic recovery, rising nearly 7 percent over 2012 to 15.3 million new vehicle registrations. (AP Photo/Paul Sakuma, File)