I just got to thinking… by “interface to the car itself” did you mean stuff like Bluetooth phone, steering wheel buttons, and backup cameras or is it more in-depth stuff like car settings and monitoring? I know the phone calls, steering wheel buttons, and backup cameras can be tied to aftermarket stereos. I’m not sure if they have figured out anything more yet or not.
I found this that supposedly fits your car and does wireless CarPlay, but unfortunately the cost and interface with the car itself is still going to be a problem. I do wish modern cars left the car interface, A/C controls, and stereo separate. This along with privacy concerns and reluctance to spend on a new car is what keeps me driving very old stuff.
https://www.crutchfield.com/p_130DMT3800/Pioneer-DMH-WT3800NEX.html
It may not be possible with a car that new depending on if the stereo does other things than just audio, but you may want to consider an aftermarket Pioneer, Kenwood, etc. Our car is so old that it’s stereo did nothing but audio so replacing it was easy, but yours might be more difficult. You could always check with a car stereo shop and see if it is possible with your car.
I’m aware of what CarPlay is. I use it in my aftermarket car stereo.