There is a slight flaw there. It fails to account for vehicle malfunctions (blown tires, running out of power, component failure, roadway debris, etc.) so even with computerized coördination you need to keep a speed determined safe distance from vehicles in front of them. (with reference to the accordion effect of stop and go.)

Accidents will require cleanup services.

Meanwhile self-driving cars can learn of them from the scheduling coordination services and distribute the load among working routes without rubbernecking.