For a high school summer job, I used to work at the facilities which test the emissions on cars as per washington state law. I got to see a wide variety of vehicles this way. In particular, when I worked at some of the places in north seattle, a surprising amount of yuppies would come through in very old hondas with 3 cylinder engines. They were getting 50mpg regularly in city driving. It was surprising to me at that age to see how long we've been able to get cars with such good gas mileage, it didnt make sense to me why more city dwellers weren't driving these small cars, especially since so many people were spending so much money on newer expensive prius's...
