So I've been wanting to try this for a while and I actually wish I had known of this sooner....like over 20 years ago sooner. Might've saved me a lot of days nearly bursting into flames driving in 100 degree weather in a car with no a/c. I still love you Stanley :) You've probably seen these in youtube videos and you may have even made one yourself. I've decided to finally stop procrastinating and freaking make one already. I got a styrofoam cooler, a PVC elbow and a fan that can be plugged into the cigarette lighter. This here was just my tester to see that this actually has potential. I think it does. After I got it together I tested it out in my Pathfinder and after a few minutes there was a noticeable difference. To see if this was actually working, after it started to feel cool, I turned off the fan and it would get warm. Turn the fan back on and it would start to cool again. So tomorrow I do this for real on a 48 qt cooler. I'll list what I used and show you step by step how I made the cooler. Til then, here's my prototype.