It fuels your party, your buzz and your hangover the next day, but believe it or not tequila may soon be fueling your car. That's because the agave plant extract used to make liquor can also be used to make an ethanol like alcohol which can serve as vehicle fuel, won't interfere with food crops, and can even be grown in the desert. Someday, our cars may hit the bottle more often than we do, but at least it won't be hitting our wallets very hard.
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Uh, it IS ethanol. That's "drinking" alcohol, the same ingredient that gives ALL our alcoholic beverages their kick.
And you can ferment the sap from maple trees, too, but nobody's going to call it an alternative fuel source.
Most biofuels proposals are dubious and make little sense, but this one is just pure nonsense. You would use alcohol from agave plants to power your car to get from one part of a post-Apocalyptic Cormac McCarthy novel to another, because there was literally nothing else to use as fuel, not as part of a viable civilization.
Requires tons of energy (heat) to extract alcohol from agave. More than corn, which is already requires more energy than can be produced.
Ethanol only makes money because of subsidies.