Ethanol limitations are not behind 70+bbl crude... while it might affect pump prices and distribution, Ethonol and its availability have zero to do with crude pricing... which is the major component, and right now its futures manipulation that is behind it, not a lack of supply or an increase in demand.
Just how are they being manipulated. Its a bidding process. You can tell the world what they can bid on future oil supplies?
As for global demand, it is increasing substantially, and oil is a globally traded fungible commodity.