(16 Sep 2021, 12:58 pm)Train8261 wrote Didn't they have one as a demo

https://flic.kr/p/22EC4U6

It wasn't that. This was a blocky, shiny metal pod, at the front, in between the arches. It looked quite jarring.

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(16 Sep 2021, 7:52 pm)BFK wrote 8294 has had air con repairs so most likely linked.

That's likely it, then.