I Hate Google's Self Driving Cars
rickstratton.com
rickstratton.com
That aside, his argument is pure speculation. He's afraid of something that might happen in 30 years[1], but probably won't.
[1]I figure even if self-driving cars were released tomorrow, it would still take decades to become popular enough for such a mandate.
But I still hate them!
I'll note that I do hear about robot driven trains in Japan, but usually as "what are those crazy Japanese up to" type stories, rather than "Why don't we have this obvious tech".