> From the look of the article the google maps solution is using lagged traffic flow data as a basis of directing waves of traffic.

I wonder if they have plans to use the destination address as another basis as this gets more traction. As the number of users grow this can help estimate where traffic will be after time passes. Google can then become that central authority of ultimately routing cars in selfless directions for maximum efficiency. It would alleviate traffic simply by showing red on the other routes, discouraging them. This red is then the predicted heavy traffic. Or rather: follow the red path and you will cause traffic.