Amory Lovins on the future of personal mobility

Edmund G. Brown Jr., Sergey Brin
Google co-founder Sergey Brin gestures after riding in a driverless car with California Gov. Edmund G. Brown Jr., left, and state Senator Alex Padilla, second from left, to a bill signing for driverless cars at Google headquarters in Mountain View, Calif., Tuesday, Sept. 25, 2012.