Despite her big movie combacks in the Kill Bill films, Daryl Hannah has revealed that saving the planet is more important to her than making movies. Not only does she have a solar-powered home, she drives a 100% biodiesel car.

Biodiesel is a lean burning alternative diesel-like fuel produced from energy crops which produce vegetable oil, tallow or cooking oils. Diesel fuel for passenger cars is virtually non-existant in America and biodiesel, even less, so this is very unusual. Diesel exists in the USA to power freight transport. And one listed company, O2diesel, hopes to turn a significant portion of that into biodiesel. Their target market is refueling for bus, trucks and off-road fleets.

So where does Daryl Hannah get her biodiesel from?