Roads need to get smarter too. Infrastucture needs to act as part of an Internet of Things. An article from CACM:
States Wire Up Roads as Cars Get Smarter by The Wall Street Journal ... To prepare for the day when self-driving cars will travel on technology-aided roads, U.S. state transit planners aim to outfit those roadways with fiber optics, cameras, and linked signal devices to make traffic safer and more efficient. ... Planners say the technology will lead to faster trips, fewer accidents, and fuel savings. ... "