Earlier quoted context omitted.
There was a CityNerd video (which you may take or leave in general, but I found the anecdote interesting) in which there appeared to be one vehicle in service on the entire system: https://www.youtube.com/watch?v=VPjODKUxV5g I assume though that they would adjust the capacity depending on time of day and whether there's an event or something going on, to some degree.
Thanks for sharing this, I had understood prior to this video that the combo of self driving tech + dedicated tunnels might have capacity that rival a light rail system like Seattle has but that's clearly not the case in the current system. I'm curious why more of the autonomous driving tech isn't being used in what I might have thought would be an "easier" place to do it.
Not to disparage, but how did you come to that conclusion? A train will always be able to fit more people/m^2 than several cars of equivalent length, due to things like ability to stand, not needing to have multiple engines and trunks, etc.