A couple of things to take into consideration with the autotaxis. We have the potential for a hybridization of taxi-bus.

Dynamic routes based on individual demand, grouping together a small number of people into a quick access people carrier. E.g I want to go right across town, you have a shorter journey that roughly overlaps my route, the vehicle will deviate slightly to pick you up.

The second thing to consider is the opportunity for mass-transit level control of autotaxi fleets (or all cars in a glorious future where everything is awesome(tm)). Optimsing the merging and cross traffic flows beyond what traffic lights do today.