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WHAT IS THAT SPINNING THING ON TOP OF THE NEW AMAZON PRIME STEP VAN/BOX TRUCK DELIVERY VEHICLE? - YouTube
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Amazon.com: Cargo Bar Adjustable 40"-70", Small Rapid Ratchet Strong Steel Load Lock Rod for Pickups, Vans, & SUVs : Automotive
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What is this round spinning thing on the back of a utility truck? It only spun when the van was moving. : r/whatisthisthing
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