Sure, billionaires fly private jets, live in massive mansions, dine at the world's finest restaurants and shop at Gucci, Prada and Louis Vuitton. After all, they're rich. But some of the world's wealthiest people aren't so flashy. They're frugal--for billionaires, at least.
Take John Caudwell, who got his start as an auto-repair shop owner and went on to create a $2.2 billion fortune (when last measured by Forbes in March) by selling his 85% stake in cellphone outfit the Caudwell Group in...Full Story