[cjbgkagh]

Apples and oranges. Of my many engineer friends none of them thought the hyper loop was viable, it’s an absurdly bad idea. Like installing compressed air jets in cars for faster acceleration. Another one of Elons missives.

Reusable rockets were more of an economic issue, is there enough demand for economic viability. That was always going to be the real magic. I think that is still an open question but it at least appears plausible.