If Tesla was a battery company, we could talk about batteries. But Tesla is a car company, and manufacturing 600,000 batteries isn't going to accomplish much if they can only manufacture 120,000 cars (let's be optimistic and say 200,000). Unless they turn around and sell the leftover 400,000 batteries to Mercedes-Benz, in which case, there's your answer.
You keep moving the goalposts. This series of comments started with someone pointing out that Mercedes don't have capacity to build a lot of batteries. Then you said 'Same with Tesla'. But thats not true.
If Tesla had the capacity to build more than 40,000 electric cars per quarter, they would deliver more than 40,000 electric cars per quarter. They don't.
Speculating about vaporware gigafactories is just that, speculation. Until they're actually building cars at scale--any kind of cars--I would take any promises about future production capacity with the same grain of salt as Elon's impulsive tweets about "funding secured".
Tesla is not more than just a "car company" They have their hands in electric vehicles, lithium-ion battery energy storage and solar panel manufacturing...
