Yeah it was a thrill since they go so fast in a blink of an eye. Never been to Indy but I have friends that go to NASCAR events and watch from the pits, they say is so much better then being in your seats.
That is one sport a viewer need to experience live rather than watching it on TV for the noise of those engines alone. The first Indy 500 I attended, I was so shocked how loud the noise was. I couldn't believe how boring it was watching car races on TV.