Ah, thanks, ctk! Found the article:

http://www.conway.com/ssinsider/bbdeal/bd050307.htm

2.5 billion investment in Oshawa 1 (for 2006 Impala and Monte), St. Catherines (to build DOD V8s), and CAMI (to build Torrent) but the most pertinent to this discussion is about Oshawa 2:

"Among the changes that will take place as a result of the deal is the addition of "flex-manufacturing" capability at Oshawa Car Plant 2. This will involve new robotics and manufacturing systems enabling quick and efficient response to market demand for future models or platforms.
When implemented, the new systems will enable the plant to produce a multitude of vehicle models and platforms on the same assembly line."

So, I guess that answers my earlier question.