General Motors (GM +7.6%) opens trading with a pop, but don't get too excited, David Weidner...

|About: General Motors Company (GM)|By:, SA News Editor

General Motors (GM +7.6%) opens trading with a pop, but don't get too excited, David Weidner writes. The automaker hasn’t made consistent profits in more than a decade, and the "new" GM feels more like a used car than a new one, he says, so don’t be surprised if GM’s IPO can’t keep its promises either.