For those who drive a car with Onstar or other directional services, beware, you may be being tracked by satellite!  Of course, that is how these things work.  But this data from the satellite may also be used against in the court of law coming soon.  Have you ever driven 85 miles an hour?  It's on the computer in your car?  Have you been to the local brothel lately?  That's on there too.  Check out this article from msn that will tell you more about the advantages (and drawbacks) to having a tracking device on your car. 

http://articles.moneycentral.msn.com/Insurance/InsureYourCar/WillYourCarRatYouOut.aspx

Pay special attention to page 2 of the article.  It has a store about a gentleman that got fined by a rental car agency (though not by police) for going 85 miles an hour in the rental car.  He fought the 450 dollar fine in court and won.  But he didn't win because of concerns about privacy.  The reason he won was because the rental car company didn't adequately warn him of the consequences of the technology in its car.  The court failed to condemn the technology or its usage by the rental car company.  

This capability could soon be coming to a cell phone near (or on) you, if it hasn't already.  If your cell phone has GPS type capabilities, you may already be subject to tracking via satellite without you having a clue!  Check out these articles:   http://www.mercurynews.com/traffic/ci_8215860
http://media-newswire.com/release_1060776.html
http://www.southtownstar.com/news/784679,021008cellphone.article

And these aren't the only devices that could be tracking you or giving out private information about yourself.  Pretty soon just about everything could easily be equipped with a tracking device.  Check out this chilling news story about RFID (Radio Frequency Identification Devices):  http://ap.google.com/article/ALeqM5horCnXwgKPtGux2O2AuN6aeBXjbAD8UDMN980