What Could it Be???

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What could this be???

https://youtube.com/shorts/CAhjWdC45Kg?feature=share

Hmm.... good question. Working on it. I can identify the event: Minpla Driving Party in Kyoto 20th & 21st May:

みんプラ運転会

https://rekisaikan-jp.translate.goog/new...r_pto=wapp

[Super]

Many thanks Dr Chris. Looks to be a fun event. It also looks like this is motorized as it looks like an on/off switch on the lead car (on right). It doesn't look like a Plarail custom unless they added the between car gangway connectors.