Hi there, Insane One!
You are definitely not alone. A commentary is a great way of concentrating. A friend of mine is ex-old bill and I asked him to give a demo of the driving commentary they do to pass their police driving course. I'm a nervous car passenger - one of those people that sits there stamping on their invisible brake pedals. In fact, I often find myself sitting on my hands to stop the urge to take control! Anyway, he was giving this running commentary on road conditions, junctions, traffic ahead, speed etc. and I felt perfectly safe for the first time in years. We were doing around 90, overtaking everything in sight on the A453. Normally, I would be considering abandoning my agnostic ways after only a minute or so of this. A demonstrated awareness of speed, distances, and visible traffic factors made all the difference.
I'd happily be a passenger with anyone providing a commentary.
Nah, forget that. Definitely mad. The men in white coats are on their way...