Warren Buffett
Rank on Forbes Billionaires List: 2
Net Worth: $52 billion
Vehicle: 2006 Cadillac DTS

Warren Buffett auctioned his 2001 Lincoln Town Car — with its "THRIFTY" license plate — on eBay to benefit a charity in June 2006 and repaced it with a 2006 Cadillac DTS. Analysts who follow the ultra-rich aren't suprised by Buffett’s relatively modest choice. “Typically, it’s not the billionaires that are seeking status with a Lamborghini or a Ferrari in the garage, but the people worth $10 million to $50 million,” says Bill Bartmann, author of Billionaire Secrets to Success.