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Thanks for thinking of me.
My thinking is it might work but have practical limitations. If they were faking it would they design in a fatal flaw? You can see the clearance requirement in the thumbnail. Whatever effect isn't strong enough to center on the rail, so it needs centering or drive wheels.
It's incidental to repurposing obsolete lines for two-way traffic/
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.tragectory: Line goes down and to the right.
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