> at some point your Amazon delivery is going to be in a locker on the back of a self-driving vehicle. You (and everyone else in the street), will get a notification that its outside for the next 30 minutes

I'm reminded of the Taipei refuse trucks that play Fur Elise to remind you that it's the five-minute window in which you can put your bins in the street.

I'm not very optimistic about delivery improving, because it's a three-sided market. You don't get to choose which courier the sender uses, but you're really their customer.