"Pee. What can’t it do? From its reputable use as a fertilizer to questionable use as a hangover cure, urine has way more uses than you might imagine (or even want to know in the first place). Seriously. Some people even claim drinking it makes you healthier. Sounds completely quack to me, but what do I know? But in the realm of interesting uses for your own bodily fluids, using urine as a source of hydrogen to power the cars of the future is a serious undertaking and based on completely sound science." - Jonathan Lee from Bookmarklet