Knowing the risks facing any company you invest in is always tremendously important. For many General Motors (NYSE:GM) investors, it can be easy to see some of the headlines about short-term factors such as new and innovative companies, like Tesla Motors (NASDAQ:TSLA), that could potentially be disruptors in the auto industry. But in this video, Motley Fool analyst Blake Bos tells us that GM's risks are really something wholly different, and may surprise you.