The way car GPS works is that you make sure its plugged in (if an on-dashboard type) or on (if an in-dashboard type). Once it is on, you need to put the destination address into the device. In seconds, the automobile GPS will calculate the shortest and correct route to take.

As you travel along the route, the car GPS device will give you the correct route to follow. It will even go so far as to show overpasses just like you were driving under or over them. Some auto GPS units even have audio or voice commands so that you don’t need to look away from the road to get your directions.

And if you happen to take a wrong turn or the road happens to have a detour (like will sometimes happen during your travels), the automobile GPS unit can quickly re-calculate the route to your destination.

One of the last neat things about vehicle navigation with GPS is that you can decide if you want to take the shortest route by distance or just use main roads or use secondary roads. In fact, some GPS units have a traffic tracker which can visually alert you to where the traffic jams are. This will allow you to quickly bypass the bumper to bumper traffic and get to your destination sooner.