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ET3 is as close to a perfect vacuum as pracitcal. The other vacuum tubes would only need less than a .5 PSI negative pressure to work. Both have the power and fuel supply in one place and the vehicles have neither.
ET3 is a magnetic rail gun and you are the projective. The other is like the tubes at banks, where the atmosphere in the tubes also serves as a buffer between vehicles.
I like the idea ofshort range electric vehicles that converge on the vacuum tube and feed into it then exit where they work, or very close to it. Range would be a few miles.
regards
Mech
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