I wonder how stupid they really are? Would they be able to figure out how to get better mileage if gasoline were $10 a gallon? $15 dollars a gallon? Or would they just sue the gas companies?
At some point along the way even stupid people can figure out that modifying their own behavior has something to do with the results.
(Your results may vary. We accept no responsibility for your own stupidity. By reading this you accept these terms. By not reading this, you accept your own stupidity and are responsible for it.)
(serious)