https://www.smithsonianmag.com/innovation/hyperloop-latest-innovation-pretty-much-series-of-tubes-180955735/#:~:text=The%20hyperloop%20was%20originally%20proposed,startups%E2%80%94seized%20on%20the%20idea.

https://en.m.wikipedia.org/wiki/Hyperloop

> The Hyperloop, in the initial form proposed by Musk, differs from vactrains by relying on residual air pressure inside the tube to provide lift by aerofoils and propulsion by fans.

Earlier tube systems used pneumatics and had speeds closer to 60mph.