As before, Google's self-driving vehicle will have two safety drivers aboard, ready to take the controls. The company sought permission with Texas Governor Greg Abbott, the Texas Department of Transportation, police and other authorities before starting tests. However, it didn't alert the public or press about the cars before they began rolling last month, apparently, causing many to wonder if the testing was even legal. Some experts question the safety of Google's cars, pointing out that they've been involved in at least 11 accidents since testing started. However, Google recently released the details of those incidents and said all were minor and not the fault of its autonomous cars.