You will never, ever be able to ride a car in a highway without paying attention. Cars are not designed like that, highways are not designed like that, and even

You will never, ever be able to ride a car in a highway without paying attention. Cars are not designed like that, highways are not designed like that, and even in your magical ideal scenario you'll be jolted awake several times by the car suddenly breaking or accelerating. You can sleep on a car travelling on a highway right now. It's called a bus. > [...] highways are the infrastructure that will be "converged" or adapted with self driving first. That's called a railway.