You have reasons to be confused, nothing makes sense in the american car industry. I saw a car magazine yesterday on the 2008 models and the american cars are exactly the same size, even bigger. All they advertise is how powerful is the motor and o/60 in X seconds. Where in the world do you have to go in such a rush that you have to be there in 6 or 7 seconds. Sometimes you think those things can not happen, but at the turn of the century GoodYear convinced the city of Los Angeles that busses where better than mass transit; today we see the consecuences.