I'm no expert in this, beyond reading pertinent articles as they pop up in my feed, but my understanding is very low maintenance on electric cars due to the lack of moving parts. In fact, there's a surprising amount of "repair" that can be done remotely via software update. Think I'd read this in relation to the potential threat to garages (i.e. repairs).
Still, don't quote me on that as you could well be right!
Do agree with Andrew re: the longer transition phase. It seems the tech itself is not far off - I think the challanges will be legal framework, around insurance, policing, social/cultural acceptance, etc. which will likely create the drag/friction to their introduction.
Personally, I'm (hopefully) confident in the next decade I'll be jumping into my self-drive car, heading off to wherever, feet up on the back seat and smile on my face