GNOME Maps is good enough for me. I don't know what Carplay is and at this point I'd rather not ask.

Framework for using your cars infotainment system as your screen/input device. Android has something similar called Android Auto.

Don't car play and android auto rely on proprietary libraries? I doubt it will come to Linux phones unless they take off or something like microg reimplements the proprietary parts.

There are boxes you plug to your CarPlay enabled car that run Android. Run Google Maps on that and you're golden. No need to carry/connect your phone to the car anymore

I don't think you mean a wired-to-wireless dongle, which is all my searches turn up. Can you give me an example of such a device?

Oh, there's plenty of these, here's just one example: https://www.amazon.com/ATOTOOUT-Magic-Box-Built-Bluetooth/dp...

Thanks! What a fantastic keyword salad that product serves up. Not cheap, but then again why should a magic AI box be cheap?