Alternative fuels for cars are all the rage now-a-days. Well, they have been for awhile, but with vehicles like the Chevy Volt just about ready to hit the mainstream, well, we can see how the whole endeavor will follow suit soon after. Of course, when you start talking about biogas --which is fuel created from human waste--, you might begin to get people raising their eyebrows at you. But, Volkswagen doesn't care. They've created the first Bio-Bug, which runs on Biogas and gasoline.