Industrial hemp could completely eliminate the need for petroleum products all together.
Hemp can be used to make fuels, plastics, textiles, paper, soaps, lotions, nutritional supplements, medicines, and dozens of other products. Hemp is a renewable resource, which means that there would never be a reason to fight a war for it because anyone can grow it and it never runs out. It is also environmentally friendly.
The reason that hemp is illegal is precisely because it is a renewable resource. It can not be exploited by capitalism because anyone can grow it. Keeping hemp illegal benefits a few powerful global corporations by eliminating their natural competition, thus allowing them to create huge corporate petroleum empires. Forceably replacing the current Iraqi regime with a "new government" also benefits those same corporations.
Now is the time for the global hemp industry to push for production of hemp-powered automobiles. The world's first hemp car ( http://www.hempcar.org ) was driven across Canada in a Mercedes Benz. Auto manufacturers may be ready to embrace hemp as a long-term sustainable fuel source for the engines they put in their vehicles. Converting to hemp on a global scale would have economic, social, and environmental benefits.