Over the weekend, Steve bought a new car. He was so excited about it that he had to take a picture of it to bring to work with him to show everyone. The picture was a Polaroid snapshot of his wife sitting in one of the front seats. Steve crowed as he showed the picture to co-worker Jim, "It's got power steering, anti-lock brakes, cruise control and a driver's side air bag." Jim squinted at the picture. Having never seen Steve's wife before, he asked, "Who's that?" "Oh," said Steve with a grin, "another feature, my passenger-side wind bag!"