http://feedproxy.google.com/~r/KnowledgewhartonInterviews/~5/iC1M8nt7EHE/KW_GM_090601.mp3 Cautious Optimism for GM's Re-invention http://feedproxy.google.com/~r/KnowledgewhartonInterviews/~3/iC1M8nt7EHE/KW_GM_090601.mp3 2009-06-02 http://www.wharton.upenn.edu/globals/images/katw_white_itunes.gif