But it may be fake in the sense that it's not viable for a long term use and / or necessitates a very controlled environment. That would indeed match the pattern for Musk companies - articulate a grandiose vision, show a working demo to amaze the world, then show progress on some scale but without disclosing the issues that actually would make to product not viable or not financially viable in the long term, and sell the hell out of it to investors.

If you look closely, all his companies work like that. Yes, including Tesla ! Their car business is at the point where they may start loosing money again - competition, slowdown in EV subsides, but also factors that allowed them to reach an apparent profitability - for example, their service is nonexistent, while it used to be great. Basically they sold millions of cars, while their service centers are still scaled for thousands, not millions. This will a big financial liability, but not really visible in their financial for now.

But hey, they already transitioned to another business that promise to make even more money in the future with other promising tech ! AI anybody ?