Full stack for tesla gives em the ability to build these dreadnout factories around the world. And if they can continue to sell cars at this pace, it could become like a literal factory where they're dependent on no one. I think with the o e m, you have so many people who can screw up and then delay the production of what ou're doing. You lose control, which is what testla had actually in the roadster days,. i think that almost killed the company before elon was running it....