Broken AC?
If you’ve ever had your car air conditioner break down on you, you know how miserable that feels. When it’s super hot out, and you have no choice but to be in your car, it can feel utterly oppressive. So naturally, your inclination is to roll all the windows down to get as much air circulating as possible.

Believe it or not, science would tell you that’s not the best solution. So instead, for maximum air circulation, you should only roll down the two front windows. Then, with only one way in and one way out, the air is forced to circulate through, moving out the hot air in favor of the cooler. Nifty, right?