Gas, charcoal, or dog poop?

I am not about to go into the 'what gives a better flavor' argument.
Stories like this give me hope that one day I will find a good use for stupid people, and become rich. I already missed out on the chain letter and multi-level marketing.

Berlin: Authorities have issued what is believed to be the world's first industrial patent for a scientific procedure to convert dog poo into fuel briquettes and construction materials.

The Berlin man who filed the patent is confident he could be the first person in history to become rich from collecting dog droppings. "I could be sitting on a pile," says Karl-Friedrich Lentze, 57, an avant-garde artist who has filed for a patent with the European Patent Office. He markets the small chocolate brown briquettes under the brand name HuKo, derived from "hundekott", a polite German term, as opposed to "scheisse", used as a colourful expletive by pedestrians who step in hundekott. - Deutsche Presse-Agentur