But the main question in the thread seems to be are you a p-zombie when you are aware of external matter, such as when driving or programming (at least afterwards you know you were sufficiently aware of it to do it without crashing the car) but as far as you remember, you were not aware of being aware of your Iness.
In other words, the question seems to be "do I switch in and out of being a p-zombie even when awake and doing something competently?"
By awake, I mean an observer friend will tell you later that you seemed to be awake, and anyway you know you were at least seemingly awake, if not conscious, as you didn't fall off your chair.
For me, there is always self awareness when I'm awake - not awareness of someone who is looking at "I" but awareness of my awareness of the external thing I focus on.
I guess I'm saying that awareness of something other, such as the road or the program you are writing IS awareness of self - just that at that time, the self you are is the screen that stuff is on.
When properly focussed on a task, at your most efficient, "you" should almost disappear, just being a pure transparent container of the subject matter. It's what zen monks try to teach - "polishing your mirror". A perfect mirror is invisible - you only see the reflected image.
But even in that state you are not a p-zombie. One of those is not only never conscious of itself, it is also never conscious of anything external to it, such as the task at hand.