(A man fills his gas tank at a gas station Wednesday, Aug. 29, 2012, in South Euclid, Ohio. Drivers are facing the biggest one-day jump in gasoline prices in 18 months as Hurricane Isaac swamps the nation�s oil and gas hub along the Gulf Coast. Some states in the Midwest suffered even more dramatic spikes. Ohio prices jumped 14 cents, Indiana prices jumped 13 cents and Illinois prices jumped 10 cents according to the Oil Price Information Service. (AP Photo/Tony Dejak))