text: FILE - This May 13, 2014 file photo shows a Google self-driving Lexus at a Google event outside the Computer History Museum in Mountain View, Calif. Of the nearly 50 self-driving cars rolling around California roads and highways, four have gotten into accidents since September, 2014. That’s when the state officially began permitting these cars of the future, which use sensors and computing power to maneuver around traffic. Three accidents involved souped-up Lexus SUVs run by Google Inc. The fourth was an Audi retrofitted by the parts supplier Delphi Automotive. Google and Delphi said the accidents were minor and their cars were not at fault.(AP Photo/Eric Risberg, File