It's a long way from the city-wide infrastructure that GM and others envision, but San Francisco has now at least taken one more step in that direction with three new Smartlet electric vehicle charging stations installed right outside City Hall. Those chargers, on loan from Coulomb Technologies, will be used to charge vehicles from ZipCar, City CarShare, and one unspecified "plug-in car in the City of San Francisco municipal fleet," and Mayor Gavin Newsom (an early EV1 owner himself) says he hopes they are just the first of more to come, adding that he's also talking to other Bay Area cities about purch