Sad Indy 500 fact

I was just listening to Globecast 0157's NASCAR review show and their North American correspondent Declan Brennan revealed this very sad fact:

"Next year there will be more past Indy 500 champions racing at the Daytona 500 than at the Indy 500."

Despite this, NASCAR's TV ratings continue to fall, as do those of ChampCar and the IRL. About the only US motorsport gaining viewers is the ALMS, but how many Indy 500 champions will be in that next year, I wonder?