British rocker Rod Stewart is best known as one of the top-selling recording artists of all time, but the 69-year-old performer is also a big fan of sports cars -- and he takes good care of them. His 1990 Ferrari F40, headed to the auction block next month in Burbank, California, may be the most pristine of the 1,315 F40s that were produced from 1987 to 1992.Jul 16, 2014
