Support WBURTesla's Big Gamble: Can The Electric Car Go Mainstream?Play07:53Download AudioSonari GlintonSteve HennSeptember 24, 2012 ShareTesla workers cheer on one of the first Tesla Model S cars sold, during a rally at the Tesla factory in Fremont, Calif., in June. The company is now unveiling a new network of refueling stations for the vehicles. (AP)