Remember the days when GPS units could only be installed on the dashboard of your vehicle? We do too - and that's why we were thrilled when we learned that our favorite techie toys are now incorporating GPS technology from trusted brands like Garmin, Magellan and TomTom.

While many luxurious car models may boast of their in-house GPS navigation systems, let's face it - portable GPS systems are a smarter alternative than their counterparts. In fact, did you know that car owners often spend up to $2,000 to add GPS systems to their cars - while similar products can be purchased for only $500?