Let me fix it for you
Actually, I've got a family member working with Tesla, I'm well aware that they use external suppliers. In your desperate bid to pick an argument, you've assumed that I was saying that they didn't use any external suppliers, which (if you go back and read it) was not correct. The whole point was the extent to which Tesla and Musk want control over what is done, and if they can't get it commercially, they'll do the job themselves.
And talking of "not being correct", if Tesla as a company "does not have anything to do with Musk", who the fuck is that bloke who glories in the title of Chief Executive Officer of Tesla Inc? You know, South African bloke, he was one of the founders of Tesla Motors, name escapes me. And separate to that, who is the largest beneficial owner of Tesla Inc shares? Including all institutional investors, it still happens to be some billionaire playboy, bloke who made his money with Paypal...maybe you could help me out, what was his name again?