After seeing the Nagoya Toyota Automobile Museum the previous day, we went to the factory tour the next day. As a heads up, the factory is pretty far from Nagoya city center by trains, it's easily 1.5-2H one way.
Unfortunately we were not allowed to take pictures in the factory itself, but it was interesting to see how their assembly line worked, namely how all cars went through the same line, and the robots and humans adjusted to the custom build of each car (from cars to minivans) to perform the precise build specifications for each vehicle.
When I asked our tour guide why Toyoda-San would have written his name in Katakana instead of Hiragana, she had no answer :)
But at least I was able to take some pictures in the small museum in the factory:
Their personal mobility device for people needing help to get around: