You have the device on your personal property with a pump similar to that found at gas stations. It is most effective with wastes that are high in alcohol (like "liquid waste" from brewing companies), but can also take things like "lawn clippings, dairy products, old chemicals, cardboard, paper, bruised and discarded apples." They are all fermented and turned into fuel "in minutes." If you don't have enough waste to create enough fuel, the company will deliver some raw materials at the rate of $2.00 per gallon. GreenHouse International has contracts to convert 29,000 tons of brewing company waste using these MicroFuelers.
In addition to using it to make ethanol for your car, you can use the ethanol to run a generator that produces 23 kilowatt-hours of electricity per gallon of fuel.
One thing to keep in mind is that your miles-per-gallon rating with ethanol is not the same as with gasoline (it is less), but the carbon dioxide emissions is less with ethanol.
Not sure if it is worth all the hassle (application to the government, maintaining a delivery schedule, slight drop in mileage is difficult to compare actual price and price savings, etc.) but it is an interesting concept.
For more information, read the Los Angeles Times article by clicking here.