Car Mode is an android app which when enabled, all calls coming to your android mobile phones will automatically go to speaker mode. Enable Car Mode when you get into the car so you don’t crash putting the phone to speaker. It doesn’t mean car’s speakers, it switch to mobile speaker.
Car Mode allows the application to access the phone features of the device. An application with this permission can determine the phone number and serial number of this phone, whether a call is active, the number that call is connected to and the like.