Many things have happened since I went on holiday... the most momentous is Richard Branson fuelling an aero engine plane with a combination of coconut and Babassu nut fuel and using it on a747 with three conventionally fueled engines to fly from London to Amsterdam. Useful because it shows that you can make aviation fuel out of coconut and a nut which grows in the rain forest.
Bad because, as far as I can see babassu oil is an edible oil...