GPS navigation is generally a good thing. GPS tracking is a slippery thing, seen by some as an invasion of privacy. The vehicle owner should be entitled to know where their property is, but it is none of their business where I go and what I do during the day. Insurance companies would love to hike premiums based on where you park, where you eat, how many mistresses you entertain, or those brief stops in the seedy part of town.<p>On one hand, GPS tracking can help against theft, or at least facilitate recovery. On the other hand, it opens up a wealth of possibilities for abuse