At the end of this article.....
"She told me she wanted to buy a hybrid, and she was concerned about the Hummer and its effect on the environment," Mr. Drake recalled. "I asked where she lived. She said Beverly Hills. I said, `Out of curiosity: How big is your house?'
"She said: `What does that matter? It's 20,000 square feet.' "
He said he replied: "I don't know what's less correct. Having three people live in a 20,000-square-foot house, with a pool and heaters and air-conditioners. Or me driving my Hummer 500 miles a month."
Mr. Drake's house, he said, is 3,000 square feet.
(thanks to Kitchen Cabinet for the Hat Tip)