Charles B. Rangel, the chairman of the House Ways and Means Committee, is not so caught up in the question of gas mileage. He leases a 2004 Cadillac DeVille for $777.54 a month. The car is 17 feet long with a 300-horsepower engine and seats five comfortably.
"It's one of the bigger Cadillacs," Mr. Rangel, of Harlem, said cheerfully this week. "I've got a desk in it. It's like an airplane."
