Linuxluver:You'll take a bus when a thousand Ubers can't get you there within an hour of when you'd like to get there.
Cars just do not scale. It's a physics thing. They take up a lot of space.
Sure, but they take up less space because they can more closely follow the autonomous car ahead, meaning more cars fit. You also have faster traffic flow, since there are less bad drivers and people hunting for parking, less excessive braking, less cutting in etc. So more cars on the same road moving faster. Now take away the parked cars on the side of the road, and you have another lane, and now share the bus lane, because the autonomous cars will move out of the way for a higher priority vehicle. Maybe more people in the car means higher priority so you go faster. You can even charge for priority status, so pay more, get there faster.
So many paradigms will change, its probably impossible to predict. But to think its will be the same as now, with mostly empty bus lanes and a crawling mass of single dudes driving SUV's packed in to the other lanes, seems like a stretch.