The original concept of "Car Play 2" as described by Apple is essentially dead. That concept required a car mfg. to surrender the vehicle UI to Apple. The major car companies likely won't ever do this as they are too far along on their own paths now. The smaller or niche players may but that remains to be seen. The real definition and capabilities of "CarPlay Ultra" are still unclear but it likely will still be essentially an infotainment add-on to a vehicles existing UI.
Google Built-In which is being offered by quite a few car brands now essentially puts an Android Tablet on the dash and is connected to the drivers Google account. All the infotainment/navigation functions are thru this Android interface while the vehicle systems remain under the UI of the vehicle but the two are linked for voice control, visual cues etc.... Car companies seem to be increasingly adopting this approach.
Google Built-In which is being offered by quite a few car brands now essentially puts an Android Tablet on the dash and is connected to the drivers Google account. All the infotainment/navigation functions are thru this Android interface while the vehicle systems remain under the UI of the vehicle but the two are linked for voice control, visual cues etc.... Car companies seem to be increasingly adopting this approach.