Saab: wont start, many different things, timing chain

Question
I have a 1999 Saab wagon- I know you deal with 1990's and earlier, but I was driving down the road, and all the sudden, the entire car turned off. I tried to start it again, and I could hear the car trying to start, but it wouldn't. Sometimes it would start for a SECOND, but then turn off again.
I got it towed to a mechanic, but I was wondering what you think it MAY be?? I've gotten many different things that it could be, but what does it sound like it could be to you??
thanks!

Answer
Kayleigh:

 When there is a sudden failure as yours, the problem is most likely electrical; either the electronic ignition spark circuit or the fuel pump. Also, with some older SAABS there is a long history of timing chain failures; if yours has a timing BELT, that too could be a source of the problem.
 I wish I could be more specific, but as noted in my profile, I do not have hands-on experience with your model.

                                      Jerry