This Article is from My Nokia Blog:
Nokia Car Mode is available for MeeGo-Harmattan – N9. Has this always been a paid app? And rather steep at £17.99?
Nokia Car Mode has been designed for in-car use to make calls, navigate to a destination, or listen to music. Enter your car, plug the phone into a MirrorLinkTM compatible infotainment system using a USB cable, and enjoy these applications on the in-car display. For making and receiving calls, the phone needs to be paired using Bluetooth with the car infotainment system. Note: Car Mode and its respective applications require a MirrorLinkTM certified car infotainment system.
Source My Nokia Blog