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Ever wondered what the spinning thing is on a van roof? - Flettner
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What is this thing spinning on top of this van? : r/whatisthisthing
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Ever wondered what the spinning thing is on a van roof? - Flettner
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What is this black round thing on the roof of this transit company van? It was spinning fast. : r/whatisthisthing
What is this round spinning thing on the back of a utility truck? It only spun when the van was moving. : r/whatisthisthing
All Products : FLOWROTOR - Van and Commercial Vehicle Ventilation - Spinning Roof Vents - Ducts - Solar Ventilators, Commercial Vehicle Air Extraction
What are the black spinning things on the top of vans?
Spinning disc ontop of a van : r/whatisthisthing
What is this thing spinning on top of this van? : r/whatisthisthing
What is this thing on top of this van? It was spinning if that helps anything : r/whatisthisthing
What is this black Spinning thing on top of big black van? Ot speeds up and slows down, relative to the vehicle speed. I though maybe self driving radar, but maybe just