As wacky as this seems, this makes a ton of sense the more that I think about it, specifically for smaller regional airports that are less than a 2-hr drive from a larger airport.

If your origin or destination is anywhere aside from a major city, there’s a lot of value in starting your trip at a closer regional airport. You get the small-airport TSA treatment, which is always faster than major city airports. The terminal itself is going to be considerably better-appointed than virtually any bus terminal (commerce, staffing, accessibility, etc). No need to travel between a bus and airport terminal if it’s all in the same building. Ticketing works along-side existing systems, as well as baggage-handling. And a bus requires a hell of a lot less fuel than a jet, making it a more eco-friendly option as well.

People better at modeling than me could probably build a graph of time and feature benefits for air and bus travel, which I’d imagine would show bang-for-buck on buses being superior (despite their speed and moderate prestige) for trips or travel-legs less than 150 miles or so. Any destination or hop further than that would probably make more sense for a plane.