So far in September, ethanol has been more expensive than reformulated blendstock for oxygenated blending (RBOB) – i.e., the unleaded gasoline. This skews the blending economics of ethanol, which are not currently positive.According to the U.S. Department of Transportation, motorists logged a record 283.7 billion miles on U.S. roadways in July, typically one of the highest mileage months because it is in the height of the summer vacation period. The total was 4.2 percent higher than July 2014. Meanwhile, miles driven through the first seven months of this year are up 3.6 percent. The average pump price in July 2015 was $2.88/gallon, down nearly 22 percent from the average $3.68/ gallon during the same month a year ago. With all of this driv...