deliveryman

The remaining risk would be a deliveryman cleaning out your fridge, but since everything is logged these days, we'll at least catch the guy.

More likely, a contractor, deliveryman or similar, would find such a service very useful.

The deliveryman may be willing to pay a x% premium to make his deliveries, while the suv owner would not. People are going to be screwed in either case: either no gas available or cannot afford it.

Tipping is indeed customary in every service trade that I'm aware of, because it conforms to the reality that the waiter/deliveryman/taxi driver/etc. actually is working, at least in part, directly for the customer.

A self-driving car still has to get the package from the street to your porch, and while I'm sure someone's working on a little robotic deliveryman, the drone combines both transit and delivery in one package.

I think it's mostly inevitable, to me it's no different than asking group of farmers which make of pickup or tractor is best, or a deliveryman which brand of shoes are best... I'm pretty sure you could come up with at least one analogue for most any vocation.