From the article, I guess the best advice is to plan on flying home Monday afternoon. ; It may take that long to get out of the track after the race!
It reminds me of how Silverstone used to be - the only access was one narrow country road.
I guess we're spoiled here in Indianapolis. ; The track is basically in a city, with all of the streets available. ; (Look at the Indianapolis Motor Speedway on Google Maps; you'll see what I mean. ; For a real thrill, use the street view to take a virtual drive down W. 16th St. and up Georgetown Rd. to see how close the grandstands are to the street.) ; However, even with all of that easy access, it takes a huge amount of manpower from all of the area law enforcement agencies to keep traffic flowing smoothly.
The best plan for any huge event like this is to arrive early and stay late.
I'm mildly disappointed (but not surprised) to see that the "stadium section" of turns 12-15 will be surrounded by stands. ; That will limit the views from the spectator mounds along turns 2-5.