> You also wouldn't need to add any additional infrastructure as opposed to ideas like vac-trains or MAGLEV in general. You still need one of the most expensiv

> You also wouldn't need to add any additional infrastructure as opposed to ideas like vac-trains or MAGLEV in general. You still need one of the most expensive parts of that infrastructure which is the rights of way, stations/highway interchanges and a transport corridor from the city to an airport (which can't be as close as a conventional airport due to 5x the flight volume, louder engines and sonic booms). The 900km of a rail corridor in the low population regions doesn't cost as much as that 30km of highway or metro tunnel directly under the CBD and 70km of arterials, onramps and interchanges.