Software trying to update when it is started is such a common pattern, despite almost always going against user intent. When I start software, that's because I want to use it. It's pretty high on the list of times I don't want it to become temporarily unusable while it updates itself. Doing the same with vehicle firmware is a sad but predictable state of things.
I can think of several devices I own that never do this. 1) My LG webOS TV. Somehow it always does its thing in the dark. OS and application updates have never been visible to me. 2) My car. Even though it can update over wifi, and by other means, it never tries to do it unbidden. You have to invoke its maintenance mode, at the time of your own choosing, if ever. 3) Google/Nest Wifi, OnHub, et cetera. Always up-to-da…
Today. That could change tomorrow. We already have forced updates for popular operating systems. Mandatory "safety" updates for car software will come one day.
I'm waiting for the day that different states implement different software rules. Imagine if Nevada implemented speed-governors but Texas didn't. I see a world where everyone has to pull over at the state line to allow their car to reconfigure software in order to accommodate local rules.