I suspect autonomous vehicles will become reality sooner rather than later - there are a lot of people spending great huge gobs of money to make it happen, and the nature of this kind of development is such that it progresses in an S-curve: we're past the initial slow development and well into the part where it looks like exponential growth.For example, consider the new Tesla - when that vehicle comes out, there will have been several years of incremental improvements in Tesla-brand autonomous function from the existing vehicles, all of which are rigged to report telemetry back to Tesla and receive updates to their algorithms.
As for the truck drivers - many of them will be relegated to what amounts to 'stockyard' jobs, shuttling trucks around delivery yards and the like. We're probably going to get a lot of very nasty labor actions, strikes, protests and the like.
It's going to get extremely ugly, I agree.
In Xanadu did Kubla Khan
A stately pleasure-dome decree
Where Alph, the sacred river, ran
Through caverns measureless to man
Down to a sunless sea