@cascadiaclassic: #tiktokautocampaign #caraccessories #swampcooler #vintagecars #airconditioner #vwbeetle Often called "swamp coolers," these cylindrical evaporative coolers were popular on cars from the 1930s to 1960s, before modern air conditioning became common. Mounted on the passenger side window, they utilized the car's forward motion to force outside air through a water-saturated porous medium (like balsa wood shavings or a woven pad) inside the unit. As water evaporated from the medium, it absorbed heat from the incoming air, lowering its temperature. This cooler, more humid air then flowed into the car's cabin, offering relief, especially in hot, dry climates. Some versions had a small electric fan for use when the car was stationary, but most relied solely on ram air. Though not as efficient as today's A/C, they provided a simple, affordable cooling solution for motorists.