19/09/2008 06:08. In preparation for the drive, Levandowski drove the route days earlier scanning the roads to be used by the Pribot for its actual journey. Using GPS to guide its way through the winding streets of San Francisco and using special lasers to maintain proper distance between itself and other objects, it traveled, with cameras and police watching, from San Francisco's waterfront, across the Bay Bridge and ending at Treasure Island. Save for a scratch received when getting on the bridge,... // Automobile Magazine