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@sj_zero
> I forgot to mention that a high-speed rail system needs to have a much different level of workmanship

I did mention that. I also mentioned that the upgrades can be done in stages. Fast trains can travel slow over unimproved sections, with travel times getting get shorter and shorter as more upgrades are done. Which is why they're a better choice than new tech like mag-lev, which can go faster, but entire lines have to be built from scratch.

@fgraver @AccordionBruce @tbaldauf