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For reference, if atmospheric pressure at sea level is about 1 bar, “low vacuum” is between 0.3 and 0.001 bar.
Huh. Insane they actually build that. It’s basically impossible to ever make it economical though. Just go slower, build more trains and lower prices. Way more benefit to society.
The US should be having a rail-measuring contest with China, not a hype®loop-measuring one.