Beginning next season, NASCAR racecars will run off an ethanol-blend fuel the sports organization is touting as the next step in the "greening of the sport." But ethanol gas has a minimal eco-impact, while it's production damages waterways, air quality and wilidlife. Ethanol production has even been linked to the Gulf of Mexico "dead zone."

But the real kicker is that this "green" gas will be produced in two different facilities, and trucked to racetracks across the country.

This move is motivated by money, not eco-friendliness. It's time for NASCAR to stop greenwashing, and really go green.