If you can read swedish, here is the link:
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\04\18\333600§ionid=BilMotorLeading car manufactorers are not interested.Companies from China are probably not interested.Cost for local research and administration of Saab would be huge compared to a cost sharing organization (like GM). Anyway, the most likely buyer would be some investment company or a part producer.
My questions are: What part producers are dependent of Saab, and would risk loosing all other customers? Is an investment company better prepared to develop Saab to a leading car company?