People sit at home in wonder and watch Heston Blumenthal create amazing dishes on tv. They know they might be able to make a good roast dinner, a decent curry or a number of meals but they also know they are not a Michelin star chef. They happily accept that there's a limit to their talents or experience and don't force their poor or risky cooking on others.
How is it then, that this principle is reversed when they get behind the wheel of their Audi, Mondeo, BMW, Nissan? They may well have a simple, standard license to drive a car / van / motorcycle etc and yet they are convinced they are as capable and as able as Alonso, Schumacher, Hamilton, Loeb, Makinen, Kankkunen, Lotterer, McNish, Capello, Tarquini, Soper, Plato, Masuoka, Schlesser, Kleinschmidt, etc, etc, etc