Fuel is a drug the U.S. has long since needed weaning off. Admittedly Americans have to cover greater distances than Europeans. But you don't need a glorified double bed powered by a throbbing great V8 to do that. A sensibly-sized car with a two-liter turbo will do the job just as comfortably.And with developing nations such as China, Brazil and India demanding ever more fuel, the planet can't put up with anyone's penchant for gas-guzzling monsters any more.But if the European experience is anything to go by, the $4 gallon isn't going to alter driving habits dramatically. America needs petrol prices to double if people are to permanently park up their 15mpg pick-up trucks. Maybe then it'll elicit a bit of sympathy from over here.