The country of Brazil uses fuel derived from sugar cane instead of corn to make ethanol for its cars and trucks.
Forty percent of the corn grown in the US goes to making ethanol.
https://www.ers.usda.gov/topics/crops/corn-and-other-feedgra…
Much of this growth in area and production is a result of expanding ethanol production, which now accounts for nearly 40 percent of total corn use. While the number of feed grain farms (those that produce corn, sorghum, barley, and/or oats) in the United States has declined in recent years, the acreage per corn farm has risen.
If you have ever traveled through the corn growing states of Illinois, Iowa, Minnesota and eastern Nebraska, the amount of farmland growing corn is extensive. Most of the rest goes to growing soybeans, which is mainly used in livestock feed.
- Pete