Earlier quoted context omitted.
I might be wrong but this seems like a very US-centric idea. For most of the developed world trains fill this need very well, while the US has had problems with their rail network for reasons partially based on geography, partially based on population density, and partially based on their own fault. I think this explains it pretty well: https://www.youtube.com/watch?v=mbEfzuCLoAQ The solution is not aircraft, the sol…
IDK, high-speed rail doesn't seem to be taking off outside of Europe and a handful of Asian countries. That leaves most of Asia outside India/China/Korea/Japan, and pretty much all of Australia/Oceania, Africa, the Middle East, and the entire New World. I would love to see high-speed rail take over the world, but there's a lot of sparsely-populated places out there, and it makes sense to investigate technologies to s…
In the US it'd require similar effort/cost as the Interstate Highway System did, but would probably yield equal economic benefit.