ITT: Post small-city transit systems. I find the idea of a <100,000 populated city having its own streetcar system to be IMMENSELY comfy. Only rules are that it has to either run on rails or off of overhead wire.

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Johnstown, Pennsylvania was one of the last small cities to abandon its streetcar network, which survived up until 1960. I believe that the infrastructure was then re-purposed to power electric trolleybuses for another few years.