Last week we reported that GM was going to switch battery suppliers for the Chevy Volt. But GM tells Autoline Daily that is not the case at all. BMW is following Mercedes-Benz and Audi into the four-door coupe market with the 6 Series Gran Coupe. Members of the U.S. House of Representatives are renewing efforts to block the use of E-15, or gasoline with 15 percent ethanol. All that and more, plus a look at the all-new Buick Regal GS.