A good car GPS navigation devices is a necessity for long trips, especially to an area you're not familiar with. Every smartphone has GPS these days, but it can be dangerous to try to use your smartphone while driving down the road. The best car GPS navigation units can be operated easily, sometimes even by the sound of your voice. Better still, they can connect to your phone via a Bluetooth connection, enabling you to make calls without touching your phone. Buy a good car GPS navigation device today, and make using paper maps a thing of the past.