Vehicle Tracking Systems-Good or bad?

The question seems stupid. I mean, of course they are good. As a matter of fact vehicle tracking systems are great, especially for big companies with fleet of trucks or some other vehicles. The companies can keep track of vehicles if something else rather than what they have planned goes by. Vehicles will never get lost from their path and even during abnormal situation can find an alternative way easily. This in turn will bring efficiency in their work.
But even with all these great features, there are people who don’t like vehicle tracking systems. Most of them are employees who have something to hide or some bad intentions against the company. Some even have a kind of feeling that they are being spied on and thus they resist such GPS tracking systems installed in their vehicles. Ya, it might seem strange but these are all facts that exist in our society. Not only do these collisions of thoughts come face to face in vehicle tracking systems but while implementing other technologies also this occurs. There are always good and bad sides of almost everything. Moreover, it’s actually totally dependent on the perception as all the people have their own views.
Bottom-line, I think vehicles tracking system is a superb technology but that just my view. If I keep boasting that in front of some employees then I might get a good round of beating. If some employer hears this, then he might hire me to get it installed and monitor their system. Everyone has their own view, what is yours?