ya that's why I made sure I got a headunit with navigation, they tend to cost a little more but worth it for me.Yeah I had and actually still have, the aftermarket nav from my truck sitting int he basement and I used one of the PAC boxes to get the radio to work with the bose in that truck. My only concern with the google car play stuff is I adventure out into a lot of areas where i dont get cell signal, and that would suck a little more if my map went blank suddenly. guess thats why i keep a bunch of paper copies of the areas i travel too anyway