Well Pontiac will still be around till the end of the 2010 model year. As far as other parts of GM, Hummer and Saturn besides Opel and Saab will be gone. Supposedly Saturn, Saab and Opel have buyers in talks but nothing concrete yet. This will hurt GM with the government now pushing towards bankruptcy, GM's suppliers are the ones that are bitching with all the money owed to them. It's the suppliers that GM is deeply in debt to that has put them in a precarious situation and the borrowing of all these millions hasn't made a dent?A lot of times when these big companies go into Chapter 11 bankruptcy, they continue to operate normally. US Airways filed for Ch. 11 bankruptcy twice, and still ran flights during those periods.
I don't think there's anything to worry about. GM and the government want the company in and out of bankruptcy court as quickly as possible. That's why the "good" parts of GM will probably exit in (hopefully) 30 days while the "bad parts" (Pontiac, other balance sheet items) will probably be split off and sit in bankruptcy court to be either re-organized or sold off.