air conditioner, you hang out car window and fill with water, it then blows cooled air into car. was used often on VW bugs. | Vw bug, Vintage vw, Vw parts
Universal Fit Vintage Style Window Swamp Cooler A/C Unit
Vintage Car Cooler before Air Conditioning Stock Photo - Image of chrome, colors: 230540878
Thermador Car Cooler - YouTube
Car SWAMP COOLER Vintage Window A/c - Etsy
Here's The Science Behind How Cars Stayed Cool Before 'Real' Air Conditioning - The Autopian