Obi-wan Kenobi will be scratching his head when he spots these in his airspace! Hope he won’t do the chops without firing a warning — because these are friendlies!
The real-time scenario:
The price of the fuel has just reached a new historical record by passing 75 dollars the barrel in 2010. Within 10 years, we could reach the famous “Hubbert Peak”, the precise moment from which the worldwide fuel production will begin to decrease because of shortages. In such a context, the massive resort to renewable energies and nanotechnologies, that do not emit gas with greenhouse effect, is becoming an absolute economical, technological and political priority!
Belgian architect Vincent Callebaut has designed a conceptual transport system that would involve airships powered by seaweed. The project, Hydrogenase, envisages that by 2030 there could be farms in the ocean producing biofuel from seaweed and acting as hubs for the aircraft.
The complete article here.