Google has published Android Auto Developer Overview guidelines for developing for Android Auto. The overall interface has been standardized for easy viewing while driving.
The document claims “The Android Auto SDK lets you easily extend your existing apps to work in the car, without having to worry about vehicle-specific hardware differences.”
The first version of Android Auto supports media apps such as music, podcast, live radio, and audio news apps. The platform integrates existing APIs for notification and support a set of voice commands. The Android SDK will be released in the coming months.