Agreed. The Swiss did study something similar (https://en.wikipedia.org/wiki/Swissmetro https://en.wikipedia.org/wiki/Swissmetro) but their proposal looks a lo

Agreed. The Swiss did study something similar (https://en.wikipedia.org/wiki/Swissmetro https://en.wikipedia.org/wiki/Swissmetro) but their proposal looks a lot more expensive and is entirely in-tunnel.