The challenge I see here is mostly psychological. Will people be okay with having to wait for the arrival of their vehicle when the self-driving car is delayed

The challenge I see here is mostly psychological. Will people be okay with having to wait for the arrival of their vehicle when the self-driving car is delayed? Will they be willing to accept the wear-and-tear their car suffers when someone who doens't own it uses it as a delivery vehicle? The illusion of control is a powerful one, and I think many people will choose to own and park a personal car near to their work so that they can get in it and get stuck in traffic immediately, rather than waiting at work while the car returns through said traffic.