How did George Miller raise the money to make the original Mad Max in 1979?

If there’s ever an apocalyptic event, and I’m around for it, AND I survive it, you can bet on one thing: I’ll immediately start wearing a leather vest with spikes on it and find a late ‘70s muscle car to drive around.

1979’s Mad Max, which takes place “a few years from now” according to the opening, is one of those movies that executed the hell out of an incredibly strong vision. Director George Miller and producer Byron Kennedy essentially invented an entire genre, and hell, they’re still putting out movies from the franchise — ones that are getting nominated for Academy Awards.

George Miller believed so strongly in his vision that when he couldn’t raise enough outside money to make the movie, he raised it his damn self. What job did he work to get the funds together to make the original Mad Max?