The boys in the booth were talking about the windshields. According to them, NASCAR had always required the cup cars to run full windshields on dirt back in the old days. I think most of the drivers would much rather have ran without the windshields. Probably would have been a better race if the drivers could have seen better. I think all the drivers were complaining about not being able to see, especially when the sun was starting to go down and they were trying to see through the mud and dirt covered windshields as they were driving into the setting sun.