>>2040470>they aren't scalable to the same degree as rail is.Tesla is putting a lot of effort into it to make it scale. (Including autonomous Tesla-busses.)
Tesla owners will be able to rent-out their cars as taxis through a maker-operated platform. Self-driving obviously helps a lot with this.
The optimum would obviously be to have on-demand vehicles for the last-mile to and from the closest station to offer an integrated solution at scale.
If public transit operators don't start putting some effort into that, (US) car makers will make them redundant. And German car makers' future is also not looking too bright, considering this.
Look at
>>2040443. That's not a closely controlled experiment, but regular operation on public roads. The future is already here and it won't wait for us, if we don't get up to speed.