Beyond just the normal controls (which can sometimes be hit or miss once you're in CarPlay/AndroidAuto mode) the extra little functionalities you notice are amazing. A good example is when using Google Maps I can zoom in/out by just pinching the touchscreen in the car, or I can use the physical dial (normally for changing radio stations) to control the zoom level, or scroll through selections. If you change contexts, what the physical dial control change along with them, and its really slick once you get used to it.