Buy a Hybrid, and Save a Guzzler - New York Times

Good take on the hybrids:

Buy a Hybrid, and Save a Guzzler - New York Times: "Jonathan Skinner, an economist at Dartmouth, has a nice way of thinking about this. Forget about the 250 gallons of gas that a Prius saves relative to a Corolla. An S.U.V. that gets 16 miles a gallon, like the Cadillac SRX, uses almost 600 fewer gallons annually than an 11-mile-a-gallon Hummer H2, because small differences add up when gas is being burned so quickly. It's the person deciding between those two vehicles who needs some extra incentives."