We had "crew" passes, courtesy of Carson Baird, and were free to go almost anywhere, including at the pit wall during the race. This race started at dusk and went into darkness. Carson won, and took the series championship that year. There are two classes of cars there, the "Baby Grand" cars like Carson's, and the GTR cars Corvette, Porsche, etc. They had separate races.
Bryar Motorsport park is no more, sort of. It used to have a little 1/4 mile oval for the lower level NASCAR types, plus a road course for the SCCA and bike racers. Then the New Hampshire Speedway, the NASCAR track was built on this site. There's still a road course, using most of the new oval and the old back part of the road course.