Katherine Legge looks to make history with unique racing double

<p>Katherine Legge will become the first woman ever to attempt the Indianapolis 500 and Coca-Cola 600 “Double” on May 24. The feat stands as one of motorsports' ultimate tests of endurance, requiring a driver to compete in two different cities in a single day. Legge discusses the daunting challenge with CNN World Sport's Don Riddell.</p>