fuel efficiency is increasing...doubling and even tripling compared to mpg ratings of the past.
at the same time as all these 'green' cars and trucks are arriving on the scene, the price for a gallon of gasoline is also doubling and tripling.
while we might be getting farther and farther on a tank of gas, does it cost any less?
of course oil prices are at an all time high. it makes good business sense.