An interesting direction from the world of autonomous cars.
Carmakers have been stuffing intelligence and instrumentation into cars since at least 1980 in an effort to get them to drive themselves, safely.
Autonomous-car designs almost all depend on stuffing enough intelligence into a car to allow it to drive. Volvo is experimenting ways to make the road do some of the work as well.
The Swedish carmaker launched an EU-funded SARTRE Project, whose goal is to get cars to gather into cooperative "road trains" travelling at a consistent speed in a single lane to save gas and reduce lane-change-induced chaos.