Ford sniffs the future... And the future is spelled "SYNC" it seems,
not "HD."

Or so suggests this story from one reader:

Here is an update to your September 26, 2007 post on Ford offering HD
Radio as a dealer installed option in their new cars. I recently
purchased a new 2008 Ford Fusion and was interested in purchasing the
HD upgrade. When I took delivery of the car, I discovered that the
Ford SYNC option, which I did not order, is now "standard" and came
with the car at no charge. I then learned that if your Ford has the
SYNC feature, the HD Radio feature is NOT available to you. I would
have to disconnect SYNC to put in HD. Now let's see. What are the odds
that people will turn down FREE Microsoft Sync, which allows you to
talk through the car radio on your cell phone and speak the name of
your MP3 songs that you want to hear, to spend $300 or so to have an
HD Radio in their car?

http://www.hear2.com/2007/11/ford-sniffs-the.html

Well, da!