God as much as things change, they seem to return to what was.
Ford's Rouge plant was where raw materials and parts came in on one side, cars came out the other.
Ford's Highland Park plant had a constant flow of parts coming in from either Ford plants or suppliers.
The just in time stuff isn't new, it has been around for a long long time and we will still need people to haul stuff here in this country not because any of these companies will go "high tech" but rather need to continue to employee union people.
Your correct in saying its nothing new. also about the in one door with parts and out the other end with final product. The way it use to be was Ford did it all,,Now all they do for most part is assembly components from vendors into a final product.
I wasn't a O/0 for the hay day as some here but I was in the plants when alot of this just in time started. Just in time was started to reduce waste due to shelf life,theft,damage,control inventory, etc etc.What I am getting at is they have mastered it in a way thats its no longer true expedite freight (or starting to) anymore. Either the 53 ft failed to make p-up,,or its a blow out load and and now with suppliers working next door it may reduce need for us even more. Not completly, there will allways be a demand for straights and vans,just not in the way most of the old heads here seen in the past.
I think they have figured out ya can stop scrap faster when components are being produced next door (or assembled) and still not have the cost of bad parts because a vendor is assembling the dashboard or seat or what ever component it is.
Most of the Sequencing plants I have seen are non-union to my knowledge..