BTW. Where I live (Island of Hawaii), sugar-cane grows wild, and is a major weed problem because it grows so well. It was formerly farmed for it's sugar content, but because of competition from Australia, Brazil, and even Florida, it was no longer economical, and so abandoned as a food crop. The bagasse (crushed cane, minus its sugar juice) it produced was burned in power plants to produce our electricity. Now we import coal from Australia to replace the bagasse (and also burn diesel in other plants, and even 20% of our electricity comes from geothermal). That abandonment took place when gasoline was about $1.30/gallon. Much of the field land has been made into pasture for cattle, or for other high-value crops such as Papaya, Ginger, etc., and much has also been converted into fast-growing forest (Eucalyptus) for supposed future paper production. Who knows, maybe we'll be going back to sugar-cane to make ethanol!