Theoretically, the “Mad Max” film franchise isn’t going to end with “Furiosa,” as directly George Miller confirmed this week in an interview with Vulture that he already as a script for a new movie.

But before you get your hopes up, Miller made it clear this hypothetical movie isn’t a priority for him at the moment and might never actually get made.

The comments came as part of a lengthy interview that eventually discussed the disappointing financial performance of last year’s “Furiosa: A Mad Max Saga,” a prequel to “Mad Max: Fury Road” that earned just $173.8 million on a budget of $168 million.

“We’ve got another script,” Miller said when asked if he’d still make another “Mad Max” movie. “But having been doing this long enough where I’m habituated to storytelling, I find myself with way too many stories — not only in my head, but...