Urine-Powered Cars Coming Soon?
 

One of hydrogen’s biggest stumbling blocks to use as an alternative fuel is the amount of energy needed to produce it. And then there’s the matter of distributing it. Botte says her gadget eliminates such problems because it’s small enough to integrate into an automobile. Urine is also readily available — your body produces two to three liters of it each day, and it is the most abundant form of waste on the planet. We could treat waste water while fueling our cars.

http://www.hardocp.com/news/2009/07/..._coming_soon63

taking a pee in somebody's tank would get a whole new meaning.

it could be a sign of liking the car/driver; if you drive Porsche into town, people will pee all over it as a sign of acceptance, and the driver will thank you for it! :D

my thoughts exactly
:)