> I have no idea what you are referring to by tubes though. Probably a reference to Elon Musk's recent claim that he had come up with some secret technology th

> I have no idea what you are referring to by tubes though. Probably a reference to Elon Musk's recent claim that he had come up with some secret technology that could dramatically improve long distance transportation, with much (much) higher speed, lower energy usage, and (much) lower cost than conventional HSR. Unfortunately the only detail Musk would give was a very hand-wavy reference to "tubes," and a subsequent clarification that he didn't mean the usual sort of "evacuated tube transport" people have talked about for ages and ages. Based on all the discussion I've seen, though, it seems pretty likely it's just a vague idea Musk had that he didn't bother to think through, and it will fall apart when he tries to fill in the details...