I believe in 30-40 years almost everything will be manufactured in an automated plant with only some products requiring assembly by hand, mostly final assembly. It's not uncommon to find a vehicle that is American made but the engine is Japanese, the transmission is Korean, the rear end (if it has one) is German, the suspension is Brazilian, it was partially assembled in Mexico with final assembly in the USA. Soon everything will be manufactured in this manner. Human resources are so difficult to come by they have to utilize them as best they can. They're finding it's better for these 1000 people to make only rear ends then ship them to an assembly plant than to try and have those same 1000 people make the rear end, engine, transmission, etc etc and assemble it as well.