Don't rule out Musk buying/leasing more of the desert East of Reno to build a car assembly plant near, or even next to, his battery Gigafactory. The fleet of electric semis can be re-purposed from hauling batteries to Fremont to hauling subcontractor parts from northern California to his growing campus.
I would suspect that he would put his toe in the water, and depending on how things go, more would come eastward across I-80.
I do not deny that Tesla could move manufacturing from California in the future.
My post said truthfully that the head line was a lie.
My view is that the Musk action is in effect a shot across the California bow. The governor and legislature have been put on notice that leaving is a reality for all companies unjustly plundered