If you park your car in open space especially in the afternoon of the day, the temperature inside your car will rise up ridiculously high. It's like an oven inside your car and you need to wait for your car to cool down first before you can drive it. If you want to instantly cool down a hot car, there is a useful tip you can learn from this video. It's very easy tip/trick, all you need to do is pumping the door open and closed for several times.
I try it myself on my own car and it worked so well! Here’s the trick: when your car is hot from being in the sun you can cool it down by rolling down one window and then, on the opposite side, open and close the car door around a half-dozen times. It pumps cooler air in from outside the car like a big set of bellows. I couldn’t believe how fast it cooled the car down.
So folks, just give it a try if you want to instantly cool down your hot car which park under the sun for hours.