Biofuel Trial Flight Set for 747

Air New Zealand says it plans to have the first test flight of a commercial airliner partially powered by biofuel. the 747 flight is one part of a deal signed by the airline, engine producer rolls-Royce and aircraft manufacturer Boeing to research "greener" flying. One of the four engines will run on a mixture of kerosene and a biofuel, and is set for late 2008 or early 2009. However, Virgin Atlantic is planning to beat Air New Zealand to the punch b having its own biofuel flight early next year.