It's Both Food and Fuel
The second most traded commodity after oil, coffee can also fuel a car ("Back to the Future" wasn't far off). A "Coffee Car" built by British engineers reached a top speed of 77.5 miles an hour, averaging 66.5 m.p.h. The team discovered that the grounds produced by coffee shops could be dried out, turned into pellets, and cooked in a gasifier, creating a synthetic gas of carbon dioxide, hydrogen and methane.
