These vents will be common in a few years. If proven effective, I would imagine all the cars will get them. Not to mention the aftermarket companies will be making them left and right for Ebay sales. I can not wait! I have though about making a two or three section lower grill block. A main block area, a section to the driver side for the AC, and a section to the passenger side for the radiator. We will see though. This would be easier to control and could be actiated while driving the car at highway speeds which would be nice.
All this mechanical Aero stuff reminds me of my old 3000gt VR4. It had an "Active Aero" system. When the car reached about 35 mph, the front air dam would lower blocking the air under the car. The rear spoiler would also raise up in the rear for more downforce. I think the front side did more for the car than the rear though.
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