Great article, bugmenot. In fact, fantastic.
All my questions answered and then some.
As far as having two people in the car, maybe they do. But, the driver is allegedly a trained pilot. I have written on the Distracted threads that when I was young, I could handle three tasks at the same time. Reading; talking; and watching TV. Now in my 70’s I can only handle around 1.5 tasks which means in heavy traffic I ask people not to talk to me at length.
A trained military pilot normally handles coordinates X; Y; and Z. Plus velocity and bank and roll and navigation; and a lot of other tasks all day flying. And, talking on the radio. Those who can’t do that probably do not even get into flight school. That may well be more than three tasks at the same time.
The pilot driving that car has X and Y, velocity; and talking on the radio no bank; no roll, no navigation issues. Though it’s just my personal opinion, i can’t imagine a trained pilot needing a car co-pilot.