INDIANAPOLIS, Ind., July 13 -- The Indiana House of Representatives' Republican Caucus issued the following news release:

While Indiana gas prices remain under the national average, Hoosiers are still struggling to fill their tanks. Fluctuating costs have led some to use gasoline with a higher percentage of ethanol, which generally costs less per gallon than traditional gas or diesel. Nearly 98 percent of all gas options at the pump contain a percentage of ethanol including the standard 87 unleaded that most U.S. cars operate on.

Ethanol is made from fermenting and distilling corn and sugars into a pure combustible substance that can later be combined with gasoline, creating E85 and E15 fuel variations. These blends with larger percentag...