Green car with 2 rotating discs on the roof?

Hello, does anyone have any idea what kind of technology this could be? It was a green VW T-van and had two rotating devices on the roof, quite flat, so I'm ruling out cameras. I'm not familiar with anything like that. Could this be some kind of surveying? Does such a thing exist? Or are they more likely sensors for environmental surveying?

Thank you

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Muecke196
7 months ago

These are probably fan wheels from a cooling in the vehicle. You used to see that often, not today.

Wintermadl
7 months ago

I’d be spontaneous in a mobile weather observation station.

But I don’t know. It’s just an idea.

Peppie85
7 months ago

Can be a radio measuring car. The hunt for illegal Wi-Fi boosters or defective devices that disrupt the network by harmonics