Android Auto update adds support for Samsung Galaxy S4 and Samsung Galaxy S5 on 3 carriers
Android Auto, which works with Android handsets running 5.0 or higher, sends everything through your dashboard allowing you to concentrate on your driving instead of your phone. Weather, traffic and information about your commute will pop up on cards that you will be able to see right in front of you. Similar to Google Now, these cards appear just when you need them.
Thirty-five different car manufacturers support Android Auto, and the feature allows you to use such third-party apps such as Skype, WhatsApp and Spotify while you are behind the wheel. For those of you totally hooked on the platform, the app allows you to continue with the Android experience during your daily commute to and from the office.
source: AndroidAuto (Android) via AndroidCentral