There will be TONS to see off the track with access to the paddock and partial garage access and it looks like there will be doing a pit lane walk.
I think you'll be disappointed if you don't bring your 18-55mm or alike along.
While I've never done NASCAR there (although I've done the XFINITY series there), you generally have full access to the paddock:

Wet Paddock by
The Braineack, on Flickr
you dont want to miss being able to capture stuff like this before the race:

DSC_0239-6 by
The Braineack, on Flickr
or meet famous McDreamys as he's suiting up for a race:
there is tons of access throughout the entire track, both on the outside and inside of the track.
I suggest the back straight, inner loop, and outer loops to start.
This was taken on the Back Straight:
I took this on the first Canon Rebel with the 55-250mm back in like 2010.
and while this was taking at the boot, it gives you an idea of how close you can get:

Turner Motorsport No. 97 BMW Z4 by
The Braineack, on Flickr
that's only 200mm on a FF camera.
Went back to my album, this is the inside of the Boot: