Oh, they FIGHTING fighting!!! That was a mean right hook!!! Also gotta love the announcers just laughing it off as they watched. If something like that happened on say an NBA court? They'd have to shut down the league for multiple days and Inside The NBA would have to hold a special edition where they talk about the ramifications of the event that occurred. Not in NASCAR, though. This is a MANS league. There's no one to hold you back on Pit Lane.
This fight was caused by this moment: