General Motors (NYSE: GM ) is not the poorly run, fragile company it once was. Fears of its long-term decline may have provided an opportunity to buy a solid business at a cheap price. Operating marginsI hold a Master's in Accounting, am a small business owner, and am an assistant investing educator for beginning and intermediate individual investors. My investing analysis focus is on identifying and developing deep knowledge of great businesses. I have helped manage businesses, spend most of my extra time ...