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Hyperloop is based on a reduced air pressure tube, not an evacuated tube. Additionally, there's inlets in the front of the capsules to actively move air/pressure from in front to underneath/behind.

I don't really know how that alters what you've stated, if at all, but it didn't seem to be addressed, so I figured I would throw it out there.



The Wikipedia mentions 1 milibar (1/1000 of atm). From a structural standpoint that's a complete vacuum.




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