SAN FRANCISCO, CA - JUNE 12: A Lyft car drives along Powell Street on June 12, 2014 in San Francisco, California. The California Public Utilities Commission is cracking down on ride sharing companies like Lyft, Uber and Sidecar by issuing a warning that they could lose their ability to operate within the state if they are caught dropping off or picking up passengers at airports in California. (Photo by Justin Sullivan/Getty Images)
