NEW YORK (CNNMoney.com) Hummer is the third brand that GM is being forced to shut down as part of its bankruptcy reorganization last year. A deal to sell Saturn fell through and GM is also closing the Pontiac brand, which it never attempted to sell. _____________________________________ Why should GM worry about maximizing its assets. It has the full faith and credit of the US mint behind it. Just close down half billion plus dollar brands. No worry, Papa Obama will make it up to you.