The use of corn ethanol and sugar ethanol for fuel needs to put out to pasture too because these sources of ethanol were originally intended to be a temporary, stop gap “pump priming” source of ethanol to build up an ethanol fuel infrastructure for what promised to be a huge cellulosic ethanol fuel industry.
My understanding is that ethanol from corn was sponsored and really started by the USA government during WWII to get ‘torpedo’ juice. Worked in a distillery post war when production was turned to drinking spirits. Theses were very interesting plants to work in.