GM may have found a buyer for Saturn, but lost one for Hummer

General Motors Corp. (GMGMQ) is turning into corporate America's answer to the late comedian Rodney Dangerfield: it "can't get no respect." Every time North America's top automaker takes a step forward, it takes another one or two backward.

Now comes word from China that experts have raised questions about the plans of Sichuan Tengzhong, a little-known private maker of industrial vehicles, to acquire GM's Hummer business. No financial details were released about the sale when it was first announced. Military versions of the Hummer, which are widely used in the conflicts in Iraq and Afghanistan, are excluded from the deal.