Hahahah pipedream, I see what you did there lol.

Oyibo bu agbara! Maglev is some very cool tech and now they want to create vaccum trains so they can eliminate even the wind resistance?! Chai! 🙆. Oyibo bu agbara!

I can't help wondering how a vacuum train would work 🤔

For instance, for it to run on the surface you would have to have like a transparent airtight tunnel of some kind made of some form of really hard glass or really hard plastic or some transparent metamaterial or whatever. In order to accommodate the airlocks for passengers to safely board and disembark, it would have to be quite wider than the train itself. You need some way to guarantee that if the vacuum envelope gets punctured that the pressure differential will equalize slow enough not to kill everyone.

If it's underground, then you might need to have the whole rail system of tunnels and stations under vacuum conditions (I'm imagining repair workers in spacesuits crawling through cathedral-sized tunnels haha) If not, then just the tracks.

Oh and in either case, the train has to have its own contained air supply or some means of safely acquiring air from outside without breaching the vacuum.

Great post, very informative.