With false starts in the Saturn Vue plug-in hybrid and a Buick plug-in crossover vehicle—the former doomed when GM scrapped the Saturn brand and the latter put on the shelf after negative customer feedback—GM is once again making plans for a plug-in hybrid in 2011, according to Bob Lutz, GM’s vice-chairman.  He said it will come from one of GM’s four core brands: Chevy, GMC, Cadillac, or Buick.  The new vehicle, representing GM’s renewed commitment to efficiency, fuel and otherwise, will employ technology used in the scrapped Saturn and Buick models. Continue Reading…