George Miller, during an interview with Top Gear, recounted the history of delayed production on Mad Max Fury Road… Miller explained, though, this led to scripts for a Fury Road trilogy being developed earlier than expected:
“… But in this process, we had dug down deep into the backstory, not only of the characters, but of every vehicle. How the steering wheels became religious artefacts and things like that. So we ended up with two scripts, without really trying. We’re talking to the studio [Warner Bros] about it as we speak, but which one of the two stories will happen next, I’m not so sure.”
Then again, it’s best to keep in mind that nothing in set in stone yet regarding the Mad Max series’ future – as noted by Miller in his Top Gear interview:
“I want to do a small film without special effects before I do any of that, just to do it quickly. We shot Fury Road for eight months… that’s a lot. Every day in the heat and the dust, doing these stunts, it’s very wearing. We’ve got two more planned, but at some point in the future.