hey guys, im thinking about removing the a/c system from my car to free up some hp(and increase my mileage a little). i was thinking about getting a portable a/c system but the ones ive seen run off alternating current and use up about 700Watts. does anybody know of any portable systems built for cars(runs off 12volt supply)? if that doesnt work i figure ill just get one of those car refrigerators and just leave it open in my car, but i imagine itll take awhile to cool the car. what do you guys think?