It's not really making fun of of NASCAR tbh. It's just a satire of America in the late 2000s. Unfortunately the director thinks he's brighter than he is and each of his movies has got worse.
I wonder who some of the young drivers will be. And cameos of other NASCAR celebrities. This is like the right window to make it before everybody that remembers the first is too old.
Until he shows he is a consistent winner. I'd say he's stuck there. SHR probably signs McDowell with the hopes by the time he's ready to retire Custer is ready to go Cup racing again