Another awesome step forward for self-driving technology is vehicle-to-vehicle (V2V) communication - the ability for cars to "talk" to each other. V2V communication is essentially the internet of things for cars with each vehicle acting as a node in a mesh network capable of transmitting and receiving information about. It uses dedicated short-range communication, which lies in the 5.9 GHz and with a range of up to 300 meters, so a message that passes through 5-10 nodes can give you info from a mile ahead or around a corner that's out of sight. The ability to look ahead will fundamentally change the behavior of autonomous vehicles, because many of their technologies are currently limited to analyzing the immediate environment. A related concept is vehicle-to-infrastructure (V2I) communication, in which stationary objects like traffic signals and sensors embedded into roads are also nodes in the network, passing information to vehicles. This concept could also be extended to cyclists and pedestrians, transmitting info to vehicles via their smartphones.