natural gas produced from cow manure, called biogas, what do you

This is an interesting concept. There is a modern inventor named Dean Kamen who is the guy who invented the Segway scooter. He also has re-invented the sterling engine (originally invented in the 1800's) which can provide power and is totally portable like a modern generator. It can run on cow dung and has been used in places like Bangladesh. This is one way to bring electricty to those in need without building expensive power plants. Also, he has invented a water purification machine that can run on the waste heat provided by the sterling engine. Methane is a good source of energy. It is also created by refuse dumps. All that decaying garbage can create a lot of methane gas.

Any way to find a new product for energy is always a plus. If they ever find a way to use this for automobile fuel will we get a free gas mask with every fill up??LOL