As you drive forward over 25 mph in your convertible, high pressure air flows over the hood, windshield, and top of your car. It blows low pressure air from behind! It enters mostly from between the front seats. This reverse gust or "back-draft" wind causes hair tossing in your face and a whistling wind that blows past your ears. This is all right coming home from the beach or if you always wear a hat, but NOT when you want to look good and feel comfortable (going to work, shopping, out on a date or going to a fancy affair).