Elon Musk, the guy responsible for sending humans to the space station, a feat that has only been matched by the largest governments, stated that building modern auto manufacturing is harder than building rockets.
As in: efficient, large volume manufacturing and supply chain management. But that's obviously a very different kind of challenge.
He said the same thing about the new SpaceX rocket, Starship, which is supposed to be produced in large volumes.
Neither did Jeff Bezos.