I haven't commented on this thread yet because I guess I have been recovering from the surprise of the initial announcement.
Having attended every 500 since 1965 (55 consecutive) and with the goal of at least 20 more (which will put me at age 100), I feel that Roger Penske is best suited of all potential owners to preserve and carry on the traditions of the Speedway and begin new ones.
The 500 has changed much since 1965, but it is still the greatest race in the world. The drivers come from different backgrounds than they did in past decades, but the racing is the best it has ever been. I think Mr. Penske is the best bet to return Formula One to IMS also, and it would be so cool to see a 24-hour race at Indy as well.
I have attended every Brickyard 400 as well but decided to not renew for next year. This year's race wasn't that bad, but my interest has dwindled.
Here's hoping the next 100 years ago are as exciting as the last at Indianapolis!