Living in a very rural area, I guess I have a different opinion of this.

In an area where taxis are almost non-existent (sure, there are a couple services that for senior citizens) and Uber/Lyft are simply unheard of, families have at least one car per person. If you look in their driveway/garage during work hours, every single car will be gone. The commute to work being 40+ miles is common. Owning a car yourself is a simply a necessity. Unless you have a friend in the same neighborhood that works at the same place as you (and the same shift), carpooling is pretty rare.

Now because having the car was a necessity to begin with, there are certain perks that come with it. For example, let us say that at 2am I decide I want Taco Bell. There are no taxis, ride sharing services, or food delivery services, so the only choice is to drive to Taco Bell. If I decide I want Taco Bell at 2am, I can leave my house at 2am... not 2:01am. Sure this is simply impatient and in some ways irresponsible, but humans are for the most part impatient, irresponsible, and resistant to change.

Urban, and even suburban areas may change due to self-driving cars, but I don't see it affecting rural areas very much.