But at what cost. How much would it have cost to install the sensors and the networking 3 decades ago? If Tesla can do passive optical in the traffic light and wireless communication between the traffic lights, it would cost a lot less than digging weight sensors under the asphalt including the cost to shut down traffic.The technology to do this, and to network lights together to improve flow has been something that could have been implemented two or three decades ago.
I've been waiting for it, knowing that it was already possible, for almost forever it seems.
This is a lot like waiting for existing tech to come up to speed in legacy auto OEMs' offerings over the same time period.
Also Tesla can probably monetize the information they gather… At it sure would be useful to track troop movements in wartime.