[AT] OT: Vehicle Cooling before refrigerated A/C

[Ray Trimble]

Does anyone remember seeing units outside the passenger window a device that looked like a canister vacuum cleaner before A/C became common. I remember them as a young boy  in the early 50's going to Amarillo. We didn't have one just wondering if they really worked. I suppose they could offer some cooling if they had ventures in it.
ray
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