If someone took ten minutes of video of you driving in city traffic; could you consistently explain all of your decisions that would be recorded?

It's very easy to tell yourself that your actions are consistent and explainable ( rational ) but if examined closely they aren't always consistent with any one set of heuristics. Following distance is one example; can you explain the decision making process by which you decide how much space to give the vehicle in front of you? Why it varies based on road conditions; weather or your estimate of your reaction times?