I am trying to find out what I need to say to Siri to get CarPlay to start giving me directions to my destination. So far it puts up a map showing the route and destination, and when I start driving, nothing happens. No voice commands, no guidance. Yes there is a greenish button on the screen that basically said "start" but I don't want to remove my hands from the wheel, my eyes from the road, to interact with the display. Is there anyway to make this whole thing handsfree? Or is this just something that must be done with the car parked. Built in nav in my car has no problems being driven handsfree. What am I missing with CarPlay?