Congestion will increase assuming number of cars on the road is the only factor that causes congestion. But it isn't. If you can reduce the number of idiots th

Congestion will increase assuming number of cars on the road is the only factor that causes congestion. But it isn't. If you can reduce the number of idiots that don't know how to zipper merge and reduce the number of accidents that cause slowdowns and the rubberneckers that make it worse, I can imagine traffic getting a lot better. And that doesn't even take into account the possibility of remote communication between the cars to better avoid busy streets and coordinate movements.