The number of flex-fuel vehicles is far greater than plug-ins on U.S. roads today, but public charging stations for the 16,500 electric cars outnumber outlets for alternative motor fuels by almost two to one. EV drivers can choose from 4,448 public charging stations, but only 2,468 stations are available to fill up the 7.6 million vehicles that can run on either E85 or traditional gasoline. Under a federal program, Ecotality received funds to install 14,000 more chargers in 18 metropolitan areas in six states and DC.