We don't all do that! I'm female and drive with the seat well back and straight arms almost, I'm a short arse too, only 5'5" but it's just style of driving I prefer. I've seen plenty of female drivers with their noses up against the windscreen though – I sometimes wonder if they're too vain to admit to needing glasses. The supermarket thing annoys me too, just bag up and pay already, grrr!