"Now imagine the person to be an airline pilot."
Not a valid comparison for several reasons.
- I can't say what it's like in the Blighty, but here in the Colonies all that's required to get an automobile or motorcycle license is passing a written test, an eye test, and a brief driving test. Basically you only have to show passing familiarity with some laws and mechanical operation of the vehicle. Whereas to be an airline pilot takes years and lots and lots and lots and lots of training, plus certification, frequent training refreshers and re-certification. Even a private pilot's license takes a metric buttload of training and cert.
- As somebody pointed out in an earlier post, flying a commercial airline requires two pilots, and at least one must be alert and in the cockpit at all times.
- Flying is not driving. Flying is not LIKE driving. Generally once you're in the air... well, I wouldn't say you have fewer things to worry about, but it's a different set of things. Typical road hazards don't exist; most man-made hazards will be close to the ground, and airborne hazards are few and far between. (Though likelier to be deadly.) Weather is a larger concern, pilot error, mechanical breakdowns.
- Keeping the above in mind, the autopilot is very clever at keeping you on a constant heading and altitude, and in combination with a properly programmed GPS can pretty much fly you from one end of the trip to the other with minimal intervention. No trees, deer or wooden posts are likely to be encountered except possibly at the endpoints of the trip, though bird strikes are more likely (but not that common).
- Oh yeah, and no flying home from the local pub. Again, I can't speak for other countries, but pilots have to be alcohol-free for a minimum of 8 hours (varies -- some airlines may increase that). But as long as my blood alcohol is within legal limits, I can jump into my car and drive -- in fact, I can anyway, just not legally. But they have to catch me to enforce it. Airline pilots? Shown the door.
Thing is, the autopilot doesn't have to worry about turns in the road -- it's not following a road. It doesn't have to worry about pedestrians, dogs, cars cutting you off, discovered checks, traffic jams, traffic signals, posted speed limits, the car ahead of you applying emergency braking... or any of thousands of road hazards or conditions. Icing is a concern, but not slippery roads.
Navigation consists of following straight lines from one point to another, (mostly) unrelated to geographical conditions on the ground. Driving a car is ALL ABOUT ground conditions.
I wish people would stop drawing this parallel, because the two are nothing alike.