CONS

The price of many items will rise. Animal feeds are made from corn. Many candies, soda, and other sweet items are made with corn sugar. And that's just the tip of it. Corn is used in the making of quite a few products. With all of these smaller things competing for the corn crop already, adding Ethanol to the competition will raise the prices of many things dramatically.

Other crops will be grown less. As the need for corn and other Ethanol-producing plants rises, more of the farmland will be used to grow those crops. Non-Ethanol-producing crop prices will rise.

More land will be cleared for crops. The current amount of farmland will not be enough to keep up with Ethanol production.

If there is a drought, or something else happens to cause a shortage of Ethanol-producing crops, we will not be able to make the Ethanol. There will be a fuel shortage.

In the end, the cons of Ethanol are no where near bad enough to outweigh the pros. Most of the cons can also be taken care of if we use other sources of fueling our cars, such as a Ethanol-electric hybrid (something like our current gas-electric) or hydrogen cars. Now those would be cars with serious gas mileage!

All of this information comes from this website:

http://www.associatedcontent.com/article/314393/the_pros_and_cons_of_ethanol_pg2_pg2.html?cat=27