Do SUVs Make A Difference?

"It gets worse. Krugman proposes to 'close the loophole that exempts S.U.V.'s from mileage standards.' Yet SUVs constitute only half of the light truck category that qualifies for lower standards. (It also includes pickups and small and large vans.) Therefore, Krugman’s brainchild, read literally, would save Americans from purchasing roughly 300,000 barrels a day a decade out."