Worth a read...this information is consistent with other information and research available online. It is from a valid respectable source. If you have a few minutes to read then please do so.
http://www.wired.com/autopia/2011/06/five-ethanol-myths-busted-2/?hpt=hp_bn11
http://www.wired.com/autopia/2011/06/five-ethanol-myths-busted-2/?hpt=hp_bn11