We were excited to take this tour, as the staff at the ticket booth talked it up. However, since nothing was being built, it wasn't all that exciting. My husband and son, who are "into" this type of thing, still enjoyed themselves and are glad they went. The rest of us weren't completely bored, but could have been happier doing something else.
The bus for the factory leaves the museum every 20 minutes and takes at least 20 minutes to get to the factory. There is a short video to watch along the way, but it's not that informative. They tell you that you can do the tour in any order once you arrive, but they have it laid out very nicely for you to go in order - they even label the parts in sequence. You start off with a film in a small theater, explaining the history of the factory and why it's so great. The next thing is another film, but this one is "multisensory". When an image of a furnace shows up, there is a blast of hot hair, for example. There are no spoken or written words, just a bunch of videos in a 360 degree circle. Your chairs swivel in a circle to see all sides of the film easily, but most of the images are on one side. Maybe if there was an explanation of what we saw, it wouldn't seem so cheesy. But as it is, it's just "fun". After that video, you take an elevator up to the Observation Deck. Here you can see the World's Largest Living Roof" and the benefits are explained to you. After you leave here, you pass a couple of vending machines and tables, if you want a quick snack. Then you cross over into the factory. There is a balcony all around the factory for you to walk. Along the way, there are monitors that explain in less than a minute what happens in each area. Since the factory wasn't in operation, this was quite informative and provided the visual of what we would have seen. Also along the path are interactive computers to further explain each part of the assembly. They say there are trucks parked at each spot so you can see the plant in progress, but they were all covered with plastic and we couldn't really see anything. After the factory part, we were able to look at some of the other cars made in the factory over the years and the gift shop. It did not take long for the bus to show up to take us back. The whole process took about 2 1/2 hours.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.