>I would bet that Tesla today can have a high operational margin in comparison with Ford or GM.

Of course they can, and we know where that margin comes from:

https://www.theguardian.com/technology/2017/may/18/tesla-wor...

    Ambulances have been called more than 100 times since 2014 for workers experiencing fainting spells, dizziness, seizures, abnormal breathing and chest pains, according to incident reports obtained by the Guardian. Hundreds more were called for injuries and other medical issues.

...

    “I’ve seen people pass out, hit the floor like a pancake and smash their face open,” said Jonathan Galescu, a production technician at Tesla. “They just send us to work around him while he’s still lying on the floor.”