Possible Clues:

• Bankrupt European automaker
• GM purchase of '89
• 9-3, 9-4 or 9-5
• Swedish manufacturer of the 90, 900 and 9000
• Seinfeld's car brand on TV
• GM sale of 2009
• Former GM subsidiary
• Swedish company famous for its design
• Audi rival
• Car whose name is an acronym