In my most common nightmare, the deal made to release us has been rescinded, and we have to go back into captivity.

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My concern is what steps one can take to protect and build wealth in what could be a nightmare scenario.

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But Whitacre's departure won't change the risk--"a big risk in my mind, " says O' Keefe's Coulter--that the IPO could turn into a PR nightmare for GM if its opening price is too low.

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