It is a combination of bad design by both parties and initial setup hassle. I'll try to document what it's like to leave my driveway. After the initial setup, bluetooth pairing, making it a trusted device, etc.

- Start car.

- I can't plug the phone in right away, because it will miss some kind of internal step, I have to wait for Ford Sync to finish "booting", then plug in my phone and stow it the box where my USB plug is.

- Android Auto then launches, unless another app on your phone is prompting you, at which point nothing will happen, you have to dig the phone back out to find out what happened.

- AA launches, click mic button on wheel (it's a hw equivalent of ok google): "Play Metallica." Always launch music first because if I launch nav first and then want to play music, it will switch off the map and show you the music controls, which I only want when I'm not navigating. But if you launch them in the right order you'll get nice music notifications on the map.

- Click mic button on wheel: "Navigate to whereever", unless of course I don't know where I am going, but if I was clever enough to put the address in my gcal it will already show up on my auto's screen, this is my favorite feature of AA. If I don't know where I am going I need to look it up on my phone, so dig it out, and then the AA app fullscreens a splash screen on the phone, so I need to drag down the notification bar, unfullscreen it, use my phone, relaunch AA again (or just unplug the phone and plug it back in) then stow the phone.

- If I put the car in reverse before this the rear backup camera turns on so I can't access the UI at all, so I might have to do steps some of the steps again depending on when I put the car in reverse and if the car was listening.

- Car now moves away from house and kicks over from Wifi to LTE and most of the time this works, but occasionally the music will just stop playing so I have to click on the "play" button again the UI.

If I'm unlucky Ford Sync will notice that something stopped playing so it will automatically put on the next music source, FM radio. Now there's no way for me to get back into Android Auto without unplugging the phone and plugging it back in. Sometimes(?) there's an android auto icon that shows up in Sync that lets me back in but I haven't determined why sometimes it shows up and sometimes it doesn't.

It's not a bad system, it's just still 1.0ish; once you're past all this crap and on the road it's really nice to have all my music and maps available, and of course having the google assistant is much nicer than I anticipated, so I can do things like "good morning" via a voice command and it will play my daily summary.