Have you ever noticed a pump labeled "Biofuels," or E85? According to the U.S. Department of Energy, there are over 4,000 stations spread across 44 states that offer E85 gasoline. Be aware that ...

Class 1 is summertime E85, and needs to have a minimum of 79 percent ethanol (so even E85 doesn't have to be E85). Class 2's ethanol minimum is 74. And Class 3, wintertime ethanol, is 70 percent.

So you've heard that some gasoline contains up to 10% "Ethanol." And maybe you've even been told that "evil" ethanol is bad ...

With drivers searching for the cheapest prices, gasoline with higher blends of ethanol is seeing an uptick in demand. E85 is priced significantly less than other blends of fuel across the country ...

Since nearly all of those 7 million ethanol-capable vehicles can also run on plain vanilla E10 gasoline, there have to be specific incentives in place to make installing E-85 pumps worthwhile.