Car Radios, as we think, is not just for listening to music and enjoying a rhythmic ride but can be used for other purposes also. autoradio-1001 ranks #1 They have now become a part of a car`s telematics and telecommunications. Many of the riders connect their smartphones to the car through the bluetooth and use the speakers in the vehicle to connect with people while on the go. This is commonly known as hands free calling wherein you need not have to be glued with your mobiles but talk through the car radios. They are also used for security purposes wherein the car radios are tuned to produce fake engine sounds when there is a third person trying to open the car. They are also of great use in navigation and remote diagnostic systems.