Not sure why you're getting downvoted. You're not wrong. It's the operator. If people actually drove responsibly, we probably wouldn't have as many issues. There are definitely too many distractions, and people in general just naturally mind wander.
That being said, it would be much better to have a mass transit system. Less accidents, I can watch my phone, do my nails, and eat my mcdonald's without worry of killing someone.
But that’s the thing: like you say, people are naturally prone to “mind-wander”, keeping that in mind and to then compare the amount of rigorous training and checking that pilots have to go through compared to the in comparison measly process of acquiring a driver’s license (and then indefinitely keeping it with no questions asked unless you do indeed run somebody over) is absolutely mind-boggling. Some countries have some safequards in place such as required driving-tests when you reach a certain age as a driver but it still does in no way account for how much of a murder-machine cars are and how casual we are about just about everyone with a shrimp for a brain driving them.
What we need is mass transit with cubes. I think a lot of the reason people dont like busses is having to listen to peoples screaming children, dealing with drunks, etc. I imagine a bus with small cubes that are soundproof kinda like those portable toilets but with a bus seat instead. Get on the bus, pay, go into an empty cube, slide the door closed. No crying babies, drunk people, etc. Pull the cord when your stop is announced.
Buses are designed to carry a lot more people than the number of seat they have since they allow for standing. Adding cubes would take away that standing space.