Ethanol has several benefits over conventional gasoline. It produces 36-42% lower carbon dioxide emissions and no toxic fumes. Ethanol is renewable, with Canada able to produce over 41 billion liters annually without impacting other needs. Ethanol demand has increased grain prices and given farmers a stable market for their crops. Countries like Brazil already use significant ethanol blends, while new technologies may allow cellulosic ethanol production from waste plant materials to quadruple in 20 years.