> Instead I think the role of the truck driver will change, with less emphasis on managing the controls and more on the strategies involved.
Sure. That job can be done from behind a desk tough, managing not just one single truck but dozens of them, at the same time. With the added benefit of being home for dinner (or breakfast, if you get the night shift).
Trucks have the advantage to planes, that in case of a malfunction, it is much easier to pull over and stop. A service car could then be dispatched, i.e. a technician who comes out and fixes the problem, or a tow / replacement tractor if it can't be fixed.
But overall, much fewer people are needed.