... is because they're using corn not grasses or algae, etc. Corn is the predominant food product in the American diet whether consumed directly or indirectly though animal feed. Using corn for ethanol is bad for the economy.
Brazil's been using sugarcane wastes and flex-fuel cars for years now and it seems to work out pretty good for them.
If they're going to continue to produce ethanol, at least it makes more sense to use a more economically viable product like grass or some other product that doesn't compete directly with our food dollars.
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