This is step one. Step two I imagine would be car navigation equipment connected to city traffic controller. Kind of like SDN in the networking world. People

This is step one. Step two I imagine would be car navigation equipment connected to city traffic controller. Kind of like SDN in the networking world. People tell where they need to go and the system fills the streets in the most efficient way (or other criteria) possible. This could route traffic away from schools during certain times etc.