Mr fusion is not too far off
In the movie back to the future we saw the doc load banana peels and garbage into this device called “Mr. fusion” which was able to convert those items into combustible fuel. This concept fascinated me and I did some Google searching on this Alternative Fuel to discover that this device although not currently perfected to fit in a car, is one of the devices that are being developed to convert normal garbage into fuel sources.
The way it works is it breaks the garbage down to it basic molecular components and extract the power from chemicals present in all organic things.