This is tesla state of the art.
https://www.youtube.com/shorts/8KMzaEKjhMs
I use to be like hehe but now I don't believe anything musk says. Where are the semi trucks whats happening with the tunnels and when can I fly half way around the world in a couple of hours.
China has all the advantages when it comes to this. They can hire a lot more engineers and just built faster. There is no secret sauce elon has. He also does not have the first mover advantage like he did with EV cars.