@azimir @Erismi14 I'd be interested in seeing "the cost of building a massive tube" compared to "the cost of building a massive highway".

DOTs across the country have been using phony math to justify ludicrously expensive highway projects for decades -- given a train in a tube would be higher speed and higher throughout, I feel like using their same logic we'd see huge "economic benefits" from connecting two new business centers with a transport mode that allows workers to work in-transit.