Midwest agriculture is in the midst of a rapid shift from primarily a food producer to being a major source of energy as well. Exceptionally high world crude oil prices in the last three years have brought huge investments in ethanol plants throughout the Midwest and even in areas far from the Corn Belt. In Iowa, combined corn processing capacity for ethanol and other corn products will soon be equivalent to more than half of the 2006 Iowa corn crop. If all planned plants are built, processing capacity would be equivalent to 133 percent of last year's crop--within three to five years.