Gee, you certainly dusted off this thread, eh ? AFAIK, this guy doesn't even post here any more, so I don't think he's going to see your reply to his post

Try this search:
http://www.google.com/search?hl=en&q...aw+enforcement

I saw references a-plenty to enabling tracking capability on OEM GPS by the law enforcement community.

They have capability to see / hear through the walls of your house from 50-200 ft away or more. What makes you think they can't track your car if they wanted (as long as you didn't defeat the system entirely) ?

In the case of GM vehicles, you don't even have to have a Navi - OnStar does the job just fine, thank you (even if you don't continue the subscription after the initial 1yr term expires).