I use Apple Maps on my iPhone. Combined with an Apple Watch, I can speak to the Watch and say "Hey Siri, take me to the Costco in Scottsdale" ... I then feel left - right taps on my wrist for upcoming turns, combined with audible directions over my streaming music through the car audio system. Surprised how well it all works. And pretty much eliminates the need to even mount the phone in view.
Apple recently added EV Charging locations to the maps, but it is not as comprehensive as the PlugShare app.
On my test Android phones (and Android Wear watch) I've enjoyed similar functionality through deeply integrated Google maps there.
There are now a couple third party "heads up" displays that show your next turn.
Somewhere I saw a project the more permanently mounted a small tablet over the LEAF S radio and using the tablet for everything for music and navigation to LeafSpy. Maybe a 3D printed holder could give a more finished look.
All of this is light years beyond dedicated GPS units, let alone the built-in systems. Asking Google or Apple for your destination in plain language is so much easier and faster than navigation the horrible UIs on most nav systems.
2016 LEAF SV