I got to drive on the track back in 2015. It was a follow the leader thing and we did hit briefly 90 but no real speeds. The yard of bricks is cool.
I would like to go to a real Indy 500 sometime, but I really hate large crowds. The place is huge. One of the largest sporting venues on the planet. The museum is cool.
I was surprised how much banking there is in the corners. It is FAR from flat.
Overall it would be an event to see.