https://www.ianvisits.co.uk/blog/2013/12/15/the-short-lived-experiment-with-rubber-tires-on-railways/
http://www.emdx.org/rail/metro/principeE.html
https://en.wikipedia.org/wiki/Budd%E2%80%93Michelin_rubber-tired_rail_cars
I tried to sell my two cents worth, but no one would give me a plug nickel for it.
I don't have a leg to stand on.
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