Where you live there are also no autonomous cars either though. Car services can pop up much more quickly/easily. This is capitalism. If there's money to be made, people will make it! OK, if you live in an area where they don't deliver mail, first, please understand that this is already an outlier of a situation for an outlier of a situation. In the context of elderly people living on their own, if my mother lived on her own in such a place, thinking about her driving would not even be close to the top of my concerns.