I use CarPlay but it is very clunky - I need to plug in the device etc. I've been working on using and old iPhone and keep it connected in the car all the time. I plan on using wifi hotspot for connectivity and since the device can sign-in using my ApplID, it can have access to my calendar or Messages as needed. Sharing the routing address from another Apple device can be done easily from Maps.

This seems like a missed opportunity for Apple - they can release a screen less device bundled with a cheap 4g connection and smooth out other integration issues for sharing / setup etc.