https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7320919/

https://en.wikipedia.org/wiki/Corn_ethanol#Greenhouse_gas_em...

Ethanol replaced MTBE, which was good (MTBE is terrible comparitively), but now it's turned into a 43 million acre per year ag subsidy program. There is no political will to remove the subsidy, due to the folks who receive these subsidies having outsized political influence, so demand destruction will be a function of EV uptake (destroying overall blended gasoline demand over time). Agrivoltaics would also be a great alternative if you could convince enough folks to buy in.