2013 Buick Encore = US Opel Meriva?
And they are both (as well as the new Sonic) based on the same Gamma II platform.
We will know for sure in just a few days, but I think it would be quite a gutsy move for Buick to offer an Americanized version of the Meriva. There is nothing like it over here.
It could definitely bring young families into Buick showrooms.
Here are some pics of the Opel, with its original door system.