ReutersGM more than doubles self-driving car test fleet in CaliforniaReutersThe GM logo is seen at the General Motors Warren Transmission Operations Plant in Warren, Michigan October 26, 2015. REUTERS/Rebecca Cook. WASHINGTON (Reuters) - General Motors Co's (GM.N) self-driving unit, Cruise Automation, has more than ...SF Traffic May Actually Benefit Self-Driving Car TestingGovernment Technologyall 8 news articles »