I suspect it will still be years before much of trucking is automated. Why? It's not just the take crap from point A to point B, it's also being responsible for making sure what was ordered is actually loaded. It will be years before, say, the laborers at Earth Bound Farms south of Salinas (supplies large quantities of "organic" produce all up and down the west coast) automates their work staff or actually has their schedules down tight.

Trucking and hauling is full of inefficiencies, and those that suffer the most are the drivers. A pickup/dropoff that takes too long because the people at the origin/destination are lazy/slow/don't care/behind has a ripple effect.

And, one could argue "but automated trucks, what schedule?", there will still need to be a human present, regardless. I suspect said human will be restrained by rules similar to what drivers experience now.