Poop power
A new VW Beetle (or “Bio-Bug”) is powered by methane gas that’s produced from human excrement. One estimate says 70 households produce enough waste in one year to power a car for 10,000 miles (16,100km).
Apparently, it doesn’t smell. See a video of the BBC’s John Maguire as he checks out the car himself.
http://www.bbc.co.uk/news/uk-england-10884539