Ethanol is probably the best option we have for anti-knock, but corn-based ethanol is worse in pretty much every way compared to other sources of ethanol like s

Ethanol is probably the best option we have for anti-knock, but corn-based ethanol is worse in pretty much every way compared to other sources of ethanol like switchgrass. So while ethanol itself has a use, corn-based ethanol is pretty much just a farm subsidy at the cost of the environment.