There are better car museums out there. The Gilmore Museum in Michigan immediately comes to mind, but as far as a single model museum, it won't get much better than this one.
There is a bit of a quality over quantity aspect here. Every single year is not covered by a display car, but each series is covered very nicely. The displays are split up into sections. There are displays with elaborate detailing, like old gas stations, workshops and things like that. Then there is an area of race cars that are displayed side-by-side with a track mural behind it. The a whole attraction about the sinkhole. They seemed to have really embraced that situation, making it an attraction of it's own.
The domed room that the sinkhole happened in is not really themed, except for the Hall of Fame displays up on the walls. The cars are lined up in groups that somewhat make sense. The damaged cars are in a section in the middle with info boards, so they have not themed them as yet. There is also a lineup of all the series from C1 to C7. No C8 was on display yet, other than the test mule car. The last area had mostly random cars that had some sort of history.
It was all really good as a whole, but some display areas were better than others. The store is really extensive, as you'd imagine. I did watch the movie in the theater, which was really good. There is also a diner where I had lunch, which was pretty good and reasonable.
This was a Bucket List place for me and it did not disappoint. It did not take as long as I thought it would. I always expect museums to take 3 or so hours and I was through in 2-ish, plus lunch.