A friend of mine is deep into tokusatsu and kaiju, the genre of Japanese sci-fi movies and television shows that gave us the likes of Godzilla and Ultraman. In 1967, the Tokyo Broadcasting System commissioned producer/director Eiji Tsuburaya to create a sequel to Ultraman.
https://www.hagerty.com/media/car-profiles/sci-fi-superfan-recreated-the-japanese-batmobile/