Customers with flex-fuel vehicles fill up on environmentally friendly fuel for a good price.  Thorntons’ store at 2291 Elkhorn Drive in Lexington, Ky., is offering e85 Flex-Fuel at 85 cents per gallon from 10 a.m. to noon today, Friday July 22. Thorntons team members intend to be on-site with e85 Flex Fuel informational handouts, and…