Just reminded myself that the distance between NYC and Chicago is almost exactly that between Beijing and Shanghai, and that the 1st is served by 1 train/day that takes 19 hours, and the 2nd is served by 35 trains/day that take as few as 4.5 hours.
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Let me know when Musk actually invents something.
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Rockets that return to the launch site to be re-used...

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What regulations hamper Amtrak?
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I am not an expert on this; someone who was explained to me that Amtrak cannot import trains from other countries because passenger wagons must be heavier so they can withstand collisions etc
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