American cable broadcast, original Mad Max. (There was no cable in Australia until the mid to late 90's).
There's no guarantee that these scenes exist. But I've had similar emails from more than one person (although still only a handful of people) describing basically the same scenes, and saying they saw them on cable. This was BEFORE any specific info was listed on the page, and these were scenes that I KNEW were filmed and subsequently cut from the final release. So on that basis, I tend to believe the rumour of there having been an early print out there somewhere with some of these scenes in.
One crew member in particular also swears blind that there was a longer version available in Australia at one point. I've never been able to validate that. Given that he worked on the film, he might have simply been at a workprint viewing or something, or seen some pre-release version - it's possible that what he saw was never publically available. Hasn't stopped me looking, but as the years go on, it seems less and less likely that I will ever turn anything up.