Isn't Elon a sort of supply chain pariah at this point though? His learnings from SpaceX and Tesla so far probably make him one of the most experienced people in modern supply chains.
I'd say a company like Foxconn is probably a much better example. They are able to mass produce millions of widgets with astonishingly few defects and even begin doing it in secret. Very impressive logistics. If just one component of the iPhone isn't ready the whole line grinds to a halt.
Yes, this is a chicken-and-egg problem. But a real one nonetheless.