A group of investors led by Boston Red Sox owner John Henry is negotiating to buy a significant stake in Roush Racing, and it wouldn't come as a surprise in the garage area if other outside investors begin taking a serious look at NASCAR teams. But is a racing team really a good buy? "Yeah," Kyle Petty said. "That's why Warren Buffett's here." Wait ... the second-richest man in America is buying a NASCAR team? "No. That's my point," said Petty, driver and CEO of the Petty Enterprises team. "It's not a good investment." Henry evidently disagrees. An avid racing...