I hope this is not too far off topic as I do believe that contrasting current energy systems to the EV system is core to TSLA long term performance, but I believe you are mis-stating the information in the linked chart "US Corn Portion used for Fuel Ethanol." The Y axis is "Billions of Bushels" of corn with ~15 billion bushels of production and ~5 billion bushels used for ethanol which would translate to 33% not 5.05%.
Cross checking various sites including
this visual capitalist and
ethanol producers seems to yield similar results. Ethanol consumes a HUGE number of acres. Also
@Gigapress noted EROI on various renewables including wind and solar is super important, and looking at EROI on biofuels like ethanol is an important lens to evaluate the usefulness of the energy source. While there is much controversy (especially in the corn belt) on how the EROI is calculated. Most studies I've seen show an extremely small EROI for corn ethanol.
This study shows an eROI of 1.040 and
these show EROI of 1.28 and .76 before adding the residual value of animal feed.
Solar on the other hand shows an EROI (though again highly variable based on geography and type of technology) shows an
EROI of 9.1-9.7.
Ramez Naam has a very nice
blog entry discussing EROI.