A biofuel can be liquid , solid or gas . It can power cars and other vehicles.
Most biofuels are at least as energy dense as coal , but produce less carbon dioxide when burnt. Biodiesel can be produced from vegetable oil and coffee grounds to exotic plants like Jatropha , as long as the plant produces triglycerides (fats and oils).
Biodiesel is not toxic or flammable and is biodegradable . Biodiesel has the highest energybalance of any fuel. 3.2 units of energy are gained for every unit of fossil energy needed to produce biodiesel.
Rudolf Diesel , inventor of the diesel engine , initially designed it to run on vegetable oil.
Henry Ford originally designed the Model T to run on ethan o l .
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