Forgive me if this gets a bit nerdy. But it's a fun story of what can go wrong when you're a big hedge fund master-of-the-universe type, standing astride the world. Now, if you're a stock-trading type of hedge fund, your modus operandi is to buy stocks that look "cheap", and sell stocks that look "expensive". And for a long time, one stock that looked expensive as hell was Volkswagen. Caught in the same downdrafts that are right now destroying Ford, GM and Chrysler, with powerful trade union