On hot days, your car can quickly turn into an oven. But there is a little trick to quickly refresh the interior of your car: – Lower only one window of your car. – On the other side of your car, open and close the door 5 to 6 times. By opening and closing the door, the hot air will escape. At the same time, the fresh air will enter through the open window. The great thing about this trick is that you don’t have to waste fuel putting the air conditioning on full blast.