toylandcruiser
Expedition Leader
LOL. Depends on how far back you want to go for this "new" idea. Starting in the early 60s hubs were pretty common. My dad bought a new Ford in 1963 and it had the hubs stock. I can't remember any of the pickups I drove in the mid-60s through the early 80s that didn't have the hubs stock. Some of the units that had "full-time" 4wd starting in the mid-70s came without hubs but it seems they were troublesome and soon there were aftermarket conversions to change the transfer cases to part-time and hubs were part of the conversion. I had a GMC I did that conversion on.
In the 40s and 50s they were an aftermarket thing