In the six years that Google's prototype driverless cars have been on the road, Google said the cars have been involved in "17 minor incidents." The company contends that the cars have never been the cause of an accident. Last week, Google was granted a patent in which it outlined how a driverless car could interact with a pedestrian through a flashing sign on its doors and bumper—as well as a robotic hand to make gestures. (We are not making this up). No word on whether the robotic hand's gestures are those which might be familiar to drivers in the Bronx.