Earlier quoted context omitted.
Agreed, but self-driving cars would enable self driving buses and they could be great. One problem with buses is that paying the drivers is expensive. As a result buses need to be big to amortize the cost of the driver across lots of users. But big buses don't work well in low demand times of the day. The only option is to run them less frequently, which sucks for users. And big buses don't fit down small streets. An…
Couldn't we already have self driving buses if we just put them on tracks? They go a predefined route anyway :)
Buseses on wheels are more flexible than trams or whatever on tracks, and can route around a collision.
Rails in the road are a severe hazard for cyclists and somewhat hazardous for pedestrians.