Comment by theprop

I feel this could be useful as a kind of underground super-highway for some cities i.e. I need to get from one end of the city to the other end without stopping somewhere in between. Tunnels can get built today as opposed to drones or flying vehicles which are at least several years away. It could probably help traffic in some large cities.

If it could be done inexpensively and quickly it's interesting.

Some sort of a cross-country vacuum tube type tunnel that could let you go from NYC to LA in 15 minutes would be amazing and I think closer to the original hyperloop idea, but ridiculously expensive and engineering-wise beyond the initial goals of this project.