Fruit Oil Powering Aviation?

Air New Zealand conducted a two hour test flight for the media where a jet was flying on a combo of regular jet fuel and fruit oil derived from the Jatropha plant.  Apparently, this fruit oil is supposed to leave a smaller carbon footprint than other biofuels.  My take: although biofuels are really nothing new, they will provide us with a step forward in being environmentally friendly.  Alternate energy sources will help to shape the economies of virtually every major country and our everyday life.  Source: Peter Mychalcewycz