Please tell me you're eventually coming up with an app like AndroidAuto or CarPlay. One that will mirror the phone on the car's screen. Yes, I know there's now an app In Car, built in, but I don't have that radio. I have the base screen. No satellite, no nothing. In order to use anything beside the AM/FM radio, it has to run through, for me, AndroidAuto, which never works correctly. Instead, it's a study in frustration.
So for those of us who don't have a 'new' vehicle with Alexa built in, this would be a perfect solution.