Also, with the driving, I tend to go into autopilot mode - for example, when travelling on the motorway, I wont remember half of it when I reach the end, I just drive. I don't even have to think about driving now, I can just do it!
Vaguely remember something like this from a psyc course I did last session at uni - 'conscious' vs 'unconscious' processing. You can do something automatically (driving, serving customers at the bookshop I work at etc etc) fine while evrything works, but as soon as something happens that distracts your concentration you tend to struggle to remember what bit you were up to... soon as you have to 'think about it' again!
Flying is not at that automatic stage for me yet!