Norway buses will run on shit

Now this is a green idea that shouldn't cost much, just think of the amount that comes out of Al Gore's mouth.

According to Worldchanging, the City of Oslo will convert the sewage to biomethane, then get that methane working as bus fuel. Two sewage plants in Oslo will be adapted to support the infrastructure and the 80 buses will require minor modifications.
Amazingly, converting 80 buses will reduce 40 tons of carbon dioxide every year.

I know some people that could power these buses on their own, for free bus passes.