Subaru has had some of that technology in place for a while, but not all of it. As a for instance, when the cars are painted, the doors are then pulled off so that interior assembly can go smoother and without damaged. Each door is tracked by the computer systems, and gets reassembled with the car that it was painted on, towards the end of the line.
Because the vast majority of Subarus are built to order, such computerized tracking systems and automation systems are very important for building a Subaru. Each car has its own parts and accessories bins that also travel by motorized robotic computer-controlled carts to the install location.
One of the neatest things was to see parts of cars being shuttled around the plant to meet up with their cars on assembly lines, for workers to install the correct parts in the appropriate car.
Another nice thing to see was the computer choosing what car frames went in what order. As a for instance, you will never see two Ascents back to back on the assembly line. They don't make it around the turns without hitting each other, and the computer knows that. So, when the computer is scheduling vehicles for the line, it takes that into account, and there will always be a different model Subaru between two Ascents.
Their computer system helps figure out or determines everything from what paint colors are to be run at a given time, to model ordering on the assembly line, to which parts been goes where, too controlling the automated carts that drive themselves from location to location with parts and car pieces, the testing data, logging serial numbers of each part installed on a car, and so much more.
There are other aspects of what VW is doing that I do not believe Subaru is, but Subaru only has one Factory in the United States.