[wagonman76]

I think the absorption principle would be a great idea. Like what is used in camper fridges. It uses no evergy except for a heating element to boil a fluid which cools the air inside the fridge and the freezer works well too. Set up the coils inside the car and divert some exhaust heat to boil the fluid. Ive also thought for a long time that this would work well for home cooling too, use the sun to boil the fluid and the hotter the sun beats down, the cooler it gets in the house.