GM reports test fleet of robot cars was in six minor crashes last month.

Reuters (10/4) reports that General Motors’ self-driving unit, Cruise Automation, “has more than doubled the size of its test fleet of robot cars in California during the past three months.” However, as the test fleet has grown, it has also reported more crashes. In September, GM’s robot cars were involved in six minor crashes in California. Rebecca Mark, spokeswoman for GM Cruise, said, “All our incidents this year were caused by the other vehicle.” None of the accidents resulted in injuries or serious damage. In a statement, GM said, “While we look forward to the day when autonomous vehicles are commonplace, the streets we drive on today are not so simple, and we will continue to learn how humans drive and improve