This may have already been posted somewhere, but I couldn't find it, but well worth posting again as it's a fascinating read:
https://www.mazda.com/en/innovation/mazda-stories/mazda/rotary-engine-story-2021-02/?fbclid=IwAR0MPmaPWNf692q9zgsXNGW6rAil9xJ1JVbQktoiv4fnxJHyJCuqtTu2lb0
Fantastic!
I want to go to the Mazda museum in Hiroshima when I go to Japan in a couple of years time, amongst some other must see places.
I will be asking if they do tours of the factory, coz that to me, is like a virgin walking into a brothel of 50 eager ladies wanting to earn a days hard graft hahahaha