A tracks and reports vehicle location information as often as every 5 seconds. This allows you to log onto a web based reporting systems and actually view the location, speed and direction of every vehicle in your fleet as well as a host of other features such as remote ignition and door lock control. Passive GPS car trackers on the other hand simply store location information which can then be easily retrieved once the vehicle returns to it’s base location.
We would not recommend it! Cellphones can be turned on and off at will - whereas GPS tracking for cars cannot easily be turn off. A cellphone will burn through battery fast if the GPS chipset is left on and working all the time. Cellphones are not as accurate as dedicated gps car tracking hardware devices.