No, I do not. I simply have a bluetooth receiver tucked away that has an analog out hooked up to an analog in in the back of my car radio, so that my phone automatically pairs when the bluetooth receiver is powered on with the car.
I need to control all phone apps from the phone.
I would expect the inability for voice command to recognize the play button in an app would fall under an accessibility issue, as I’m sure there are many that would rely on controls to be able to recognize the play button as a play button.