Here is what I did - fairly detailed write up and lots of pics - http://forum.xda-developers.com/nexus-7-2013/general/nexus-7-2013-install-dash-lexus-gs400-t3181496
I have seen some threads where people are talking about porting android auto to an android head unit. I have also seen some threads where people are talking about putting android auto on a tablet or phone that they plan to mount in their car. Maybe I'm missing something, but I don't understand the rationale for either of these. If you have an android head unit, don't you already have all of the capabilities of android auto built into your head unit? Similarly if you are going to mount a phone or tablet on your dash then why not use those apps that are already native to your phone/tablet?
The reason I ask is because I'm in the market for a new car stereo and the differences in cost between an aftermarket head unit with android auto and an android head unit (i.e. no-name chinese brand, etc) seem quite large. I've seen the reviews on here, Youtube and other places for some of the Chinese units and they seem very feature rich. Please help me make a list of pros and cons to buying a head unit with Android Auto and an Android Head Unit. Here are just a few that I can come up with.
Then again, like this thread has repeated so many times, AA is very limiting. And we all have androids mainly for the reason of user control and customization. I'd love to hear some feedback from anyone who has used both systems and what they like / dislike about each.
Please come back in 30 days or so and let us know if you are still as happy.
I hate to be a "downer", but reading the forums I can see that many people come across many little problems in day to day usage, and they post on XDA asking if anyone has solutions.
Of course, as always, people who are happy are less likely to post. And if you are happy, that's great and I'm happy that you're happy. I'm not posting just to criticize and be a "hater".
Are you OK with this device having Kitkat, and likely no upgrade ever to Lollipop ?