I like this stuff too. The thought of it first being born in someones head, going to paper, the engineering, the tooling and machining, setting up the production line, the employee training, testing and more testing etc etc is amazing!! And being able to do it all and make money doing it by providing a product people want is very cool!
I have gone on factory/sales tours in my field, nothing as cool as the video, but some of them are ok. The best one was Cambria (counters) in Minnesota, first off the girls they hire to tour you through and try to sell you there product....
. The factory has or had at the time a bunch of trade patents so it was very Willy Wonka like.... I would ask a question and they would hustle me along without answering and try to distract the question. The tour guide finally politely told me they were trade secrets and to enjoy the tour without so many questions on how its done.. 