It's no joke. The pit for a TBM in the SpaceX parking lot is real.
Whether it will be successful is another question.
Whether it will be successful is another question.
Especially when they buy a digging machine (still small compared to the ones I've seen near where I work), you can see it there: https://www.instagram.com/explore/tags/theboringcompany/
"Tunnel-boring is a notoriously expensive process. The Boring Company is looking to cut down costs by building a machine that can dig and place reinforcements in the wall at the same time, Musk said. Tunneling machines traditionally dig for half the time and then go back to add reinforcements, a longer and costlier process."