Before thinking of double headers, IndyCar have to sort out the Oval/Road course balance. Oval racing has been an American open wheel racing staple for quite some time. Especially with the two championships. It needs to be 50-50 or at least weighted towards Ovals before they try anything else.
Rain looks like it could be playing a part in the race. Will be interesting to see how the former F1/Gp2 drivers fair against the full american racers. Would like to see Sebastian Bourdais do well; How do you go from 4 consecutive Champ Car titles to to failing at Torro Rosso?