On Tue, 7 Sep 2004 13:47:22 -0400, "Batong Buhay"
<batong.buhay@comcast.net> wrote:

>I read somewhere that, on recent model (better streamlined) vehicles, at
>high speeds you may get better mileage with AC-on/windows-closed that you
>would with AC off/windows-open. It explains that open windows disturbs the
>streamlining greatly increasing the drag to the point that it draws greater
>engine power than the AC. I haven't tried it myself - just wondering if you
>folks have experienced this.

Yes. That study is true. If I drive over 50 mph, I close the
windows to keep the car as streamline as possible. If it's too
hot, the A/C goes on -- it's still more fuel efficient than
opening the windows.