A recent post on “What kind of track switch is this” had a link to the Wikipedia entry on railroad track switches which described monorail track switching which had a link to monorails which had a link to this interesting contraption from 100 years ago…
Would be hard to manage in a model unless you make it large scale and power it with onboard batteries - getting track power to it would be a bit of a problem!
Nope. I tracked down the sources. But I suspect I know the Photoshopper yu mean. Brennan’s a real person, there really is a Journal of Irish Railroads, And that thing probably shouldn’t have made it off the drawing board.
MR had a photo of a similar monorail setup—on Staten Island, NY—in their “Railroad Oddities,” back in the '50s, except that one was actually 2-rail, one under, one above, probably to keep it from falling over!