Also Australian and can confirm once you get on main-ish roads a certain distance from major population areas these were a thing (at least quite a few years ago, don't drive so haven't recent data on this stuff).

It's nice to think there is some trust/faith in humanity once you get a certain distance away from the frenetic pace of life in cities.

On a related note, have recently finished (with my wife) a bottle of Adnamurchan whisky - highly recommended, although I'm more of an Islay guy.

Also spent 2.5 years living in Scotland - those blue sky photos are the exception, not the norm.