The choice not to allow the owner to project Apple CarPlay or Android Auto at all on vehicles equipped with Google Built-In is certainly GM’s right, but it can and will impact sales to a degree. Whether it is a large or small degree remains to be seen. Most users can easily replicate their experience by downloading Google equivalent apps from the Play Store directly to their vehicles, so it’s really a matter of end user education and individual adeptness at technology. I have had a couple of customers who were very disappointed that CarPlay projection was not supported at all, but I ultimately was able to educate them on how they weren’t really missing features, but had to create new muscle memory to invoke the Google Assistant and use Google Maps instead of Apple Maps. There are other issues that are more serious that I am experimenting with finding ways around to make it easier to cope with losing Apple CarPlay.