Warren Buffett, Investments, US

Net worth: $49.9 billion

Warren Buffett, the third richest man in the world is often accused of being a miser. Buffet owned a 2001 Lincoln Town Car that, symbolically enough, had a license plate that read 'Thrifty'. In 2007, the investment genius sold the car on eBay for $73,200 and made a profit of $11,000, which he donated to charity.