The Indianapolis 500 is Sunday and we know this because we’ve been treated to a month of questions to Danica Patrick about when she’s going to give NASCAR a try. It’s a sign of how far general interest in open-wheel racing, not to mention its signature event, has fallen. The hard-core fans will still turn out and tune in this weekend, but it’s saying something when the most asked question is about the future of a driver who isn’t even a favorite to win the race. Jimmie Johnson has heard the questions and Patrick’s open-ended answers about the possibility of...