Actually, I am not trying to prove anything to you (or others) or say how people should think about consciousness. I am just sharing my experiences and what I have found based on them, so others can try out and see for themselves, so perhaps we could learn together more about these.
Neuroscientist Rodolfo Llinas did an interesting experiment on himself, and explained it in an interview on Science Network about his book "I of the vortex". He was able to consistently turn his foot inwards by placing a strong magnet at certain position on his head. Then he decided he would decide to move his foot outwards when the magnet was applied on the same spot. When he did this, his foot still moved inwards. His experience was that "I changed my mind". He was able to repeat this experiment many times, and each time he felt he had changed his mind. So he could not distinguish between changing his mind and his body doing something and his mind making up post-hoc reason for it.
This story, as well as my experience of trying to understand my consciousness experimentally has led me to become very suspicious about my own thoughts about my conscious experiences.
And consequentially, about other people's thoughts about their conscious experiences as well. So my question to you is, how would you know that of all the times you have had a similar experience this, you were all the time fully focused in deeply thinking about something?
I’m not sure that I would characterize this as a ‘lack of consciousness’. Of all the times that I have experienced this, it’s because I was thinking deeply about something else (not lacking consciousness), and simply assigned a subroutine to the driving.