Given CarPlay history, either very few OEMs will actually adopt this or it's going to take a long time for your favorite car to get it. Sadly, no one wants to give up control to Apple and Google.
“Apple says the first vehicles with support for the next-generation CarPlay experience will be announced in late 2023, with committed automakers including Acura, Audi, Ford, Honda, Jaguar, Land Rover, Mercedes-Benz, Nissan, Porsche, Volvo, and others”
They had similar statements when CarPlay was first announced. It took years for OEMs to support it. Maybe it will be different this time.