There are two kinds of navigation systems for cars: ones that come built into the dashboard of your new vehicle and portable devices which are plugged into your car’s power outlet. The in-dash systems are the ones that typically have DVD technology that allows them to play DVDs either right on the screen or using an external screen such as monitors mounted in the back of seat headrests. Most using the in-dash screen, however, will not allow you to play the DVD while the car is in drive. Tips Warnings Writer Bio
