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NASA moves a step closer to supersonic passenger flights
(www.cnn.com)
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this post was submitted on 26 Aug 2023
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It would still take you 2-3 days, assuming normal operation with stops along the way. If the fastest train that exists on the planet right now ran from NYC to L.A. and was able to go from 0 to top speed instantly, and maintain that speed the entire trip, it would still take 10 hours to get there. Trains don't operate that way though, so realistically it's 3 days worth of travel. It's almost 3000 miles to cross the USA.