Jatropha-fuelled flight

From Jatropha-fuelled plane touches down after successful test flight :
"An Air New Zealand jumbo jet left Auckland just before midnight GMT with a 50-50 mix of jet fuel and oil from jatropha trees in one of its four engines. The two-hour test flight, which took the Boeing 747 over the Hauraki Gulf, showed that the jatropha biofuel was suitable for use in airplanes without the need for any modifications of the engines. It forms part of the airline's plan to source 10% of its fuel from sustainable sources by 2013.
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Air New Zealand's biofuel was made from jatropha nuts, which are up to 40% oil, harvested from trees grown on marginal land in India, Mozambique, Malawi and Tanzania. The fuel was pre-tested to show that it was suitable for airplanes, freezing at -47C and burning at 38C.
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"One of the reasons we chose algae and jatropha is that both are not food sources and can be grown in arid regions and virtually anywhere," said Leah Rayne, managing director of global affairs at Continental. "So they do not compete with food crops for water.""