Peter, go to the Garmin site and search 'Nuvicam' and you will see the
unit I'm talking about.  Check Amazon for best prices.
As for maps the Garmin has lifetime map updates and their displays for
driving directions are going to be way beyond the Android apps.  I have
several of the Android mapping/direction apps on my phone and although they
work they are nothing like a dedicated GPS unit like the Garmins.