What's the difference between Android Automotive and Google Built-In?

One is a set of apps while the other can run almost everything inside of a car.

One is a set of apps while the other can run almost everything inside of a car.<p><img src="https://www.engadget.com/img/gallery/whats-the-difference-between-android-automotive-and-google-built-in/intro-1791404607.jpg" /></p>