Dear kat (sorry for the delay, but we Brits have been asleep): I have no problem with your driving a car. I just want you to understand that your car uses gas and in the production of that gas it is inevitable that sometimes oil-spills occur, this being a less-than-perfect world. If we all stopped driving, flying, buying goods which are moved by trucks, there'd be no more oil-spills. But to use a car and then to blame the oil-companies for polluting the environment strikes me as a little inconsistent (there are stronger, uglier words).

Kat, please don't think I'm getting at you personally. You obviously care about the environment and do all you can to use your car as little as possible. But it needs saying.