You need a certain population density for high speed rail, or even decently fast rail, to be economically viable, don't you? I've had brief experiences with hi

You need a certain population density for high speed rail, or even decently fast rail, to be economically viable, don't you? I've had brief experiences with high speed rail and I loved it. Much more comfortable than the whole taxi/airport/plane scenario. Though I do understand HSR doesn't scale for very long distances.