The idea is that you'd use your commute time to do something other than drive. You could read a book, watch a TV show, play video games, etc. You could even take a nap if you wanted to.
So buying a house behind even a 2-3 hours commute will become doable. So people will start doing it. Perhaps briefly wake up after 5 hours of sleep, hop on and get the rest 2 hours of sleep in the car.
