Last year, while I was still producing About.com's Classic Car site, I wrote a story about Daryl Hannah's biodiesel- powered 1983 El Camino. The environmentally- conscious actress runs her vintage machine on ethanol-thinned vegetable oil, getting up to 40 mpg in the city. Hannah will be one of the stars in a 13-part TV series premiering Tuesday, April 18 on cable network's OLN at 8 PM EDT. "Coolfuel: Roadtrip" follows Australian Shaun Murphy (and his Jack Russell terrier, Sparky), as they travel through 30 states in 30 unique vehicles. All run solely on Alternative fuels. Should be fun to watch, and educational, too. Photo Credit: HarmonyFestival.com.