Road Railer – Coupler mate

While I would dispute that the container was invented in the US, there is one kind of intermodal transportation that clearly originated there – the Road Railer!

These are special designed road trailers, who can be coupled directly into a train, just by adding special bogies. For more info see here:
http://espee.railfan.net/swift.html
https://www.youtube.com/watch?v=ozqY3Ze4sAU
https://www.youtube.com/watch?v=zXvzyM0NFtA
(the last one is just a train of five locos and 81 Road Railers – very impressive).

There were some experiments with this or similar systems in Europe, incl. UK, but it didn’t find a place in the market. But it seems, that Road Railer made their way to India:
https://www.newindianexpress.com/cities/chennai/2018/sep/26/southern-railway-launches-indias-first-roadrailer-train-1877217.html
https://rdso.indianrailways.gov.in/uploads/files/HANDBOOK%20ON%20ROADRAILER%20FINAL%20%281%29.pdf

When it comes to model railroad in n-scale, namely to the important US-ver