Hyper loop surfers the same constraint as roads and rail, it is limited to the linked cities. Aircraft have the absolute ability to link (almost) any two airports on the planet and can change their plans daily. Tunnels are hideously expensive, crossing the Atlantic or Pacific, mind blowingly so.
Meanwhile in the real world, we have three rail gauges in Australia and a state governement so inept they buy rail cars too big for the tunnels they use.
Edited to add; I just read ferry’s too high to go under bridges on the route they were bought for. Amazing.
Last edited by Icarus2001; 13th Nov 2021 at 22:38.