The “Another Dimension Train” that appeared in the final episode of “Ultra Q” titled “Open Up!” was the miniature of the real-life train called “Odakyū (company’s name) Romancecar” officially identified as “Odakyū 3100 Train” while it was operated from 1964 to 2000 connecting Shinjuku, Tokyo, and Hakone, Kanagawa Prefecture, known for its picturesque scenery including Mt. Fuji.
The shape of the train truly evokes a feeling of nostalgia to me as the design appears to be typical to the Showa Period (1926-1989) I spent my childhood with. It should also be an unforgettable train for Ultra fans because it impressively appeared in “Ultraseven” Episode 2 with Alien Waiell in disguise of Ishiguro on board.
The same miniature as the one used in “Open Up!” can also be found to appear in “Ultra Q” Episode 10 as a train passing through New Tokyo Station where Super Express Train Inazuma was about to leave for Kyūshū.
If my memory is correct, the miniature could still remain in existence and could have been covered in a book while I don’t remember which book it was.
It is widely known that this “Open Up!” episode was not aired when the series broadcast for the first time as the broadcasting of the episode was decided to be deferred because it could put a damper on the rising popularity caused by the Ultra Q episodes predominantly featuring kaiju characters while “Open Up!” had none of them and could have been too difficult for children to understand as it was a plot worked out as one of the “UNBALANCE” episodes before the show turned into “Ultra Q” in accordance with its shift into a kaiju series from the sci-fi show featuring mysterious phenomena.
“Open Up!” was an episode Hajime Tsuburaya, Eiji Tsuburaya’s first son, put so much energy into by directing it while being inspired by the script written by an up-and-coming female script writer Mieko Osanai that triggered Hajime into deciding to join the staff for “UNBALANCE.”
Nevertheless Takashi Kakoi made up his mind to postpone airing the episode, and “Ultraman Eve Festival” was broadcast instead so as to develop the popularity of kaiju characters before the sequel “Ultraman” started broadcasting a week later.
It is said that Hajime reluctantly agreed to Kakoi’s suggestion to make the episode broadcast when the rerun of the series would air, and it was actually broadcast as the rerun was shown. It seems that there were some children who were surprised to see the episode they hadn’t watched abruptly aired (I don’t think I was one of them because I was too young then).