1969 Buick Skylark Custom Convertible 2-door 5.7l on 2040-cars

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Next Buick Regal coming in 2017, could be imported from Germany

The Buick Regal is based on the Opel/Vauxhall Insignia, a pair of sedans from General Motors' European and British outfits. In fact, over 46,000 Regals from model years 2010 and 2011 were screwed together on the same lines as the Insignia twins, before GM's Oshawa, Ontario factory took over production fully. Considering this closeness, rumors that claim the next-generation Regal - due for 2017 - could move back to Europe aren't terribly surprising. Here's why, according to Automotive News.
Oshawa is home to three other vehicles, aside from the Regal - the Chevrolet Camaro, Impala rental queen and the Cadillac XTS. We already know next-gen Camaro production is headed to Lansing, MI, and that the fleet-only Impala will (finally!) die in 2016. As for the XTS, as AN explains it, sales are so slow that GM will either kill it or just shuffle its production volume elsewhere.
Taken along with the fact that Unifor, the Canadian labor union repping workers at the Oshawa factory, claim GM hasn't made any guarantees about future production at the nearly 60-year-old factory, it seems fairly clear that the Regal's current factory is going to be put out to pasture.

Cadillac, Buick and Chevy decisions impacted by worries abroad

European Concerns Drive GM, But Beware Of The French Connection
GM's bid to rationalize Europe will impact the products that will be offered domestically.
It seems that Europe is defining the future of General Motors more so than its home North American market. Having axed Saturn, Pontiac and Hummer, GM has done a fairly good job of repositioning its remaining four divisions, Cadillac, Chevrolet, Buick and GMC. Cadillac carries the luxury banner. Chevrolet is aimed at the masses with cars and trucks along with a nod to performance thanks to Camaro and Corvette. Buick bridges the premium gap between Chevy and Cadillac, while GMC offers a hardcore work/upscale proposition.

2013 Buick Encore

City, Slicker
We admit it. We have no earthly idea how this whole thing is going to shake out.
Typically, after driving a new car or truck, we come away prepared to hazard a guess as to whether said model has a good chance of being a sales success. We've amassed enough time watching the industry, scrutinizing the competitors, and so on, to make a reasonably educated bet. Yet here we are, days removed from driving the new 2013 Buick Encore, and we still have no bloody idea.