Biofuel jet test flight

I just read an article in "cnn.com" that the world's first biofuel jet had been tested but not surprisingly without any passengers. I would not call it even much of a test as the Virgin craft which had a B20 mix of coconut oil and babassu oil was used in only one of the four main airline tankers. This whole extravaganza was in order to promote the whole cleaner flying campaign which I'm pretty sure is a government scam to cover up the major subsidies that have provided for development of biofuels. Its good to see active criticism in the article against the whole process about how were not really solving the carbon emission process and how the whole thing can be counter-productive.