All self driving cars that communicate with each other would dramatically increase the throughput of our roads. In a perfect system, the number of cars that can

All self driving cars that communicate with each other would dramatically increase the throughput of our roads. In a perfect system, the number of cars that can travel the speed limit is limited only by the number of cars that can fit on a roadway. With humans, we got nowhere near full capacity before a ripple effect causes traffic behind to slow to a crawl. Self driving not only helps the traffic problem, drafting at distances which would be unsafe for humans would also increase efficiency.