[Johnny555]

This whole discussion is about how self-driving cars will make car ownership unnecessary -- you don't need a rental car at your destination, you just call a cheap self-driving car to drive you around just like you do at home.

[greedo]

The parent was comparing flying to driving cross country.

[Johnny555]

He's comparing riding in a fully autonomous self-driving car that will let him and his family sleep at night when he's driving to flying. He's not planning on driving his car 40 hours over 4 days himself, I think the number of people that consider that to be a viable option over flying are very low indeed. I can almost agree with him that a self-driving car would make this viable, but I think he's overestimating how comfortable 4 nights of sleeping in the car on the road will be for him and his children.

When that fully autonomous self-driving car exists, then cheap self-driving cars for car-share will exist.