Will repost an earlier comment of mine:

"I met a director from Tesla just after their unveiling of the Model X. She said a small number of people were assigned to fully assemble / prep each vehicle shown that night.. for roughly two weeks they worked 20 hour shifts and slept 2 hours each night. Most teams were working on them right up until the cars rolled on stage; there was still wet paint on one. Also, it was said a "normal" workweek of 16 hours days isn't uncommon..

She can't wait for options to fully vest and gracefully exit. It's not for lack of thrill, growth, etc. – just that after 3-4 years it is heavily taxing and a pace of sanity is much desired."