The TL;DR in one quote:

Job cuts at the US traffic safety regulator instigated by Elon Musk’s so-called Department of Government Efficiency disproportionately hit staff assessing self-driving risks, hampering oversight of technology on which the world’s richest man has staked the future of Tesla.

An interesting quote from a Tesla manager:

“Letting Doge fire those in the autonomous division is sheer madness—we should be lobbying to add people to NHTSA,” said one manager at Tesla. They “need to be developing a national framework for AVs, otherwise Tesla doesn’t have a prayer for scale in FSD or robotaxis.”