It’s actually not that much easier. Putting cars on the road with digital dispatch means that the cost to route is near zero. But getting efficient allocation f

It’s actually not that much easier. Putting cars on the road with digital dispatch means that the cost to route is near zero. But getting efficient allocation for buses is very hard. You need high frequency for urban transit to work. A single line at once per fifteen minutes is 48 bus visits at each stop in a 12 hr day. Just try it. Put 100 buses in Austin in some sim. You won’t get 100 people in them. SF is 49 sq mi with 800k people. Second densest city in America. 1200 buses. It’s a doomed proposition with 100 buses.