From that newsstory link Jack the Sailor gave us in his opening post:

"Senator McCain and the Republicans mock Democratic candidate for president Barack Obama for suggesting that the country conserve gas through proper tire inflation."

What kind of ignoramus doesn't know that you don't inflate your tyres to the correct pressure you do actually get fewer miles to the gallon.

I suppose the same kind of twit who would laugh at the suggestion that switching off unnecessary lights is a way of reducing the amount of electricity you use.