Air Should Be Free

Dear Ultramar:

Yesterday TreeHugger ran a post reporting that if every driver slowed down, drove 5% less and kept their tires properly inflated, it would save twice as much gas as the Arctic National Wildlife Refuge oil could provide. Other sites report that proper tire pressure alone could save 4% of our gas consumption. I planned to write today that air should be free, a service provided to customers like water and paper towels for checking oil, to encourage people to keep their tires properly inflated.

I was going to illustrate it with a picture of...