TL;DR this is related to Tesla's Autopilot (the rule "requires automakers to report crashes if advanced driver-assistance or autonomous-driving technologies were engaged within 30 seconds of impact"). Musk wants to not be held accountable for damages and casualties caused by his shitty software.
Gosh it's a good thing that some rich bastard whose companies are subject to regulation isn't going to put in charge of some government position that he can leverage to quash any possible accountability he may be subject to...
Not half of everyone voted. I think we'd be better off if they did, but I can't blame them too much for sitting out when the other side still supports a genocide.