The need for a GPS Navigation unit in a laptop is currently useless in my opinion. Considering the relatively inexpensive nature of self sufficient GPS units, it's hard to grasp why someone would want to attach an external device to their laptop. While laptops have become increasingly more portable, most cellphones have built in GPS technology, providing portability that they can't.

Attaching a GPS unit to your laptop will cost you less than an independent one, but having to lug your laptop around to figure out where you are will become very cumbersome. Car units plug directly into your auxiliary power and can be left there as that is their main purpose. Cell phone and portable GPS devices allow you to pinpoint where you are outside of a car and can often be slipped into your pocket.

As your laptop is a multi-functional device, leaving it in your car would be very disadvantageous. You would also have to purchase an inverter to allow your laptop to charge through your car. Even a portable system like the Asus eee pc can't compete against a cellphone with built in GPS as most people bring their cellphones with them wherever they go. While the functionality of GPS on your laptop may sound beneficial, you will mostly being utilizing it from a stationary position.

Having access to the internet provides connectivity to services such as Google Maps. While it can't pinpoint your location, most people will know where they are when using their laptop. The price point makes the device something to consider, but it honestly is a waste of money that could be put toward a separate device that would easily fit your needs instead of trying to make your laptop more than it is.

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