[LordDragonfang]

It's not an either-or situation, one helps the others.

AVs more or less solve the last-mile problem with public transportation - if you don't live on a transit route, or the one you live near is infrequent, taking it can be infeasible.

But also, it directly helps one of the major pain points of transit logistics - you cannot effectively respond to demand by scaling up/down the size and quantity of busses when you have human drivers that expect to have regular routes and regular hours. In contrast, you can have a whole fleet of electric short/medium/large busses which spend most of their time idling at the charge stations (which reduces maintenance costs) and go in and out of service as the daily traffic demands it, even pre-emptively going to a destination hub during off-peak times to await peak one-way demand (e.g. busses going to loiter downtown at 3/4ish to wait for all the businesspeople going back to the suburbs)