"Tesla is filing a lawsuit against Alameda County immediately," he tweeted. "The unelected & ignorant 'Interim Health Officer' of Alameda is acting contrary to the Governor, the President, our Constitutional freedoms & just plain common sense!"

Musk is referring to county health officer Dr. Erica Pan, who signed on to the order spearheaded by Santa Clara County's Dr. Sara Cody that is in effect in six Bay Area counties. The local order is stricter than Governor Gavin Newsom's state order, which allowed for the return of retail and manufacturing on Friday. Local officials have declined to soften the order to be in line with the rest of the state.

"Frankly, this is the final straw," Musk tweeted. "Tesla will now move its HQ and future programs to Texas/Nevada immediately. If we even retain Fremont manufacturing activity at all, it will be dependen (sic) on how Tesla is treated in the future. Tesla is the last carmaker left in CA."