The Denver Zoo has developed a working prototype of a "gasifier," a motorized Tuk Tuk (aka three-wheeled rickshaw) that runs on animal dung and trash. 

According to a press release, "The gasification system will convert more than 90 percent of the zoo's waste into usable energy, eliminating 1.5 million pounds of trash currently going to landfills annually."

The zoo's media contacts claim the breakthrough could change how the world manages waste and creates energy.

We think it stinks. Let us know when it can travel through time. We hear our kids are a-holes.

[Via io9]