The problem is that flights are not sustainable much longer. Flying uses an astounding amount of subsidized fossil fuels, requires infrastructure that takes up

The problem is that flights are not sustainable much longer. Flying uses an astounding amount of subsidized fossil fuels, requires infrastructure that takes up quite a large amount of space, and is increasingly both inconvenient and intrusive. They're also a separate matter from the last-mile problem that bicycles, scooters, and autonomous vehicles aim to solve (assuming we can structure AV use in a way that, during the transition period towards full subscription use, doesn't increase traffic like so-called ridesharing taxis do now). The United States can be one of these countries funding HSR. Countries that are quite pleasant to live in--and some that aren't, depending on your outlook--are already funding HSR and already have expansive rail networks. There's no reason we can't, too.