The exclusive club Katherine Legge hopes to join with historic 'Double' attempt

Attempting to complete 1,100 miles in a single day of racing is quite the challenge (unless you're an endurance racing driver), but it's even more daunting when you're doing it in two wildly different race cars and at two race tracks that are multiple states and over 500 miles apart. That is what it means when a driver says they are attempting 'The Double. ' Their day will begin at Indianapolis ...