May 6, 2011 Buick may get Opel Astra GTC based variant - and a convertible too Edit Delete Tags Autopost Buick may get more Opel-based models to its revived North American lineup after the success of the Insignia-based Regal. Source: http://feeds.worldcarfans.com/~r/worldcarfans/Jxfz/~3/8LcgC-zHoPE/buick-may-get-opel-astra-gtc-based-variant---and-a-convertibleGeki Olivier Gendebien Marc Gene Elmer George Bob Gerard