Rail works at the inter-county scale, but not in local distribution, and self-driving AI is not limited just to trucks, but also extends to couriers that can follow pedestrians (at least to include ramps and elevators. I'd be interesting if little dogs -- the robots -- are used for couriers.) So it's not just truckers but all mail and delivery occupations that are threatened in the coming decade.

For now, the pinch seems to be getting autonomous cars to interact with human-driven automotive traffic, as we already have clerical robots that can be tolerably not-annoying to fellow pedestrians and clerks in a work environment.

If we were actually striving for post-scarcity communism, this would be a major step in letting common workers become artists (with the free time they have after partitioning out jobs that cannot yet be automated) but instead our ownership class is looking for a blast furnace by which to direct the workers they no longer need for their vanity projects.