> I suspect some aspects of driving a car consumes a majority of a person's brain power, even if it doesn't feel like it. A decade or so ago I decided to get

> I suspect some aspects of driving a car consumes a majority of a person's brain power, even if it doesn't feel like it. A decade or so ago I decided to get my motorcycle license, and one of the changes to the testing regime that had come about since I got my car license was that you are required to verbalise any risks you are seeing: drive along saying "oncoming traffic, pedestrian approaching the edge of the footpath, driveway" and so on. It's an interesting thing to do because it's remarkable to understand just how much background processing that you are doing, and how many subtle hints you might be getting - the direction a person is looking and other body language are influencing your assessment of whether someone is likely to wait at the edge of an intersection or just step out; if the lights on a car blink as a person walks towards it, they're probably about to get into it rather than cross the road, and so on.