> you're not as smart as you think you are. there will be less air resistance in this tube. thats the point not enough less to make it worth doing unless it's also enough less to implode. partial vacuum tubes also implode. the more vacuum, the less it takes to make them implode and the worse the implosion gets. a sealed aluminum can implodes just from the partial vacuum caused by a bit of steam condensating inside it. a vacuum tube miles long and even a single digit percentage vacuumed would implode as soon as it's pierced unless it's so heavily reinforced that it resembles a cartoonish bank vault along its entire length including the entrances where passengers get in.
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