If all this did was slow down traffic, I might live with it. But it makes the highways by far more dangerous than anything on the current driving tips list. It produces congestion, cramming everyone together, getting on many people’s nerves and then produces those other kinds of problems (like tailgating and tempers).
I spend a lot of time on interstates and NONE of the dangers I encounter are produced by things like excessive speed. They are produced by people who have no idea how to use the highway.