I will definitely agree that a transportation system based off public transit is much better than what we have now. The advantage you get with a 100% AV based system is that you can get coverage that you’ll never get with public transit. NYC, which has a great system, still has lots of parts of the city which you can’t really get to without calling a car or walking a long way. The point-to-point routing should not be discounted either. Getting in a car and going directly to your destination rather than trying to make a bunch of connection (and dealing with kids or purchased items or a wheelchair) makes a big difference for a lot of people.