One of the coolest feature of most GPS vehicle tracking devices is the mapping display that is built into the units. The maps will show your position on the map in real time. They can also show you the path you have taken and the path it wants you to take to get between where you are at and where you are going.
There are also additional maps that you can buy and install on your GPS handheld unit. This is particularly useful if you are traveling to a new area and don't already have a map installed on your gs unit. On some systems you can also download you data to your computer to do additional mapping there.
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