Since California began issuing permits for self-driving car tests on public roads last fall, four out of nearly 50 vehicles had minor accidents. According to an Associated Press report, three of the four were Google's Lexus SUVs outfitted with Delphi's autonomous technology. The fourth was a test vehicle owned by Delphi. In half of the fender benders, the cars were in control when the accident occurred, and all of them happened at speeds of under 10 MPH. Most importantly, all four cases resulted in minor damage and no injuries. Due to the state's privacy laws, the report doesn't indicate any further details -- like if they happened while backing out of a parking space, for example.