On my way back from DC today, I stopped at the first Citgo on 29 south to refill, as I generally do. I was delighted to see, printed on the pump, 10% ethanol. They're using the E10 blend, which any recent car can use without modification. Now I 10% know how ethanol car drivers feel when they fill up: great. This doesn't appear to be company policy, so it may take a while for this innovation to reach Cville (it just took me an hour and 45 minutes).