[Erlich_Bachman]

A lot of people really really like to travel in their individual vechicles instead of public transport. They like it so much that they spend a lot of money (a proxy for their own time and life energy), and deal with other problems like parking etc.

So a tunnel system which moves public transport trains does not compare in utility with a system which can move personal cars. Did you just ignore this fact?

[hannasanarion]

The above comment pointed out that they abandoned the idea of moving personal cars, they will now have large proprietary vehicles that only travel within the tunnels and have seating for a bunch of people. Aka, trains.

[Erlich_Bachman]

This looks like a first project for them. From the previous Boring Company presentation it is clear that the long-term vision includes a lot of tunnels for private cars.