Interesting. Thanks for posting! Here is some additional:
http://gas2.org/2012/06/15/buick-tra...lation-begins/Rumor of a Buick version of the Chevy Volt has been floating out there for awhile
http://green.autoblog.com/2012/06/15...emark-electra/Back in 2008 GM was considering badging the Opel and Vauxhall version of the Volt as "Electra," but of course decided to go with Ampera instead. We'd be more likely to believe that this new trademark filing was prompted by similar motives than any return to form for a Buick Electra flagship.