Here is what you do to save on gas for short trips. And don't laugh! You freeze 1 gallon jugs and get urself a cheap portable fan. Air out the vehicle before you leave put 2 or 3 of the frozen gallons near you In a paper back and use a fan to draw the now colder air out twoards you. Doesn't work perfect. Makes a bit of a mess if it melts. But hey You can save on gas and not be as hot. Plus when the water starts to melt you can drink it!
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