You all sound like Balmer.
This is a CONCEPT!!
Elon is THINKING you all are pointing, laughing and adding no value to the conversation of "What comes next?"
If your idea is "the metro works", a 150 year old system, then this video is not for you.
To the video, I like the concept of combining public and private transportation in the same path.
It also makes sense as a way to directly link far distances. To me, this is a modification of the hyperloop concept. Something more feasible in the shorter term and definitely less risky.
Of course all this depends on the economics and physics of boring becoming cheap and 10x faster. keep thinking Elon.
Earth needs more of your "fantasies". Let the pointers keep pointing.