Interestingly I just read an article in PopSci where a company is planning on putting neodynium on existing rails and the electromagnets on the trains. The cost would be reduced by ~80% and maintenance and fuel even more. In theory, of course.
It doesn't say how they'd stop the permanent magnets from wrecking every electronic system in 100 yds. and sucking in every ferrous metal from a mile away like a black hole.
It doesn't say how they'd stop the permanent magnets from wrecking every electronic system in 100 yds. and sucking in every ferrous metal from a mile away like a black hole.
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