Google’s got a new patent for its self-driving car. “Earlier this week Google received a patent that lays out some of its ideas for how driverless cars might communicate with the pedestrians around them, allowing the vehicles to broadcast their intentions without being overly aggressive. For example a flashing stop sign on the side door would let humans know when not to cross the street in front of the car. A sign on the front bumper could flash when it was safe to pass in front of the car. And a robotic hand could give the kind of signals to fellow motorists they often look for from other humans.” I suspect the signal I immediately imagined from the robot hand is not the one they intended….