You are being a bit vague. If I want to travel 60 miles, I'm not going to get on a jet. Do I want to get on a jet to travel 200 miles? What exact use case are you trying to describe? Also consider, for example, that a 777 needs a big airport.

This reminds me how once several years ago I had to fly MKE -> ORD -> LHR where the distance between MKE and ORD is about 70 miles. The MKE -> ORD flight was full by the way and it took ridiculous 2 hours to get there (from boarding to leaving the plane). I think I did it because the direct flight was several hundred $ extra and I happened to be in MKE area anyway.

All these scenarios don't matter because wherever you are going most of the time you won't have anything BUT a jet and not a maglev train to bring you there (because it will only connect 2 cities to each other, and you'll never map out the whole territory with maglev train lines due to their prohibitive cost). Unless you want to take you car.