Neil, if you listen to Victor
Neil, if you listen to Victor Muller's press conference (can be found at saabsunited dot com for example ), you'll see that he and Chinese worked hard to work out a deal that would fit the agreement with GM. In fact, the last version of it was such that NO GM technology at all would go to Chinese. GM said NO, and that was the end.
As for the "non-existent Saab technology" -- that is ridiculous. All GM was after throughout the history of ownership (first part-, then full) was Saab technology and innovations, while at the same time they tried (successfully!) to kill it by making it one of GM's badge-engineering projects. Read at least something that contradicts official GM position. Say, excellent piece "Who Killed Saab" by Hilton Holloway at (can't post links, but it can be easily found).