Good as that film about the Phaeton factory was, it is not the only factory in world where you can watch cars being assembled through a window. In Mooresville NC one has for years been able to watch Nascar cars being built, and in case you think they are one-offs, most have a production run of 50 or so!
I visited a factory in Israel in 1991 that had only 4 factory floor workers and they,2 per shift, sat at monitors and were only called upon when the automatic diamond cutting tool making machines couldn't fix their own fault revealed by automatic quality checks.These guys weren't needed often. Magnetically guided electric trains running on black marble tracks (the rest of the floor was yellow marble) trundled from goods inwards to the machine to deliver raw material, then carried finished items to the stores, and then another robot picked stock to fulfill orders and boxed them to await the courier for export to any of 62 countries.Incidentally the trains were programmed to shout proximity warnings in different languages manually selected dependent on the country from which the frequent visitors were from.