Maybe someone will come up with a way to force that "in the car" mode when using an AppRadio enabled unit. That would require the iDevice to be jailbroken, so it could take months since iOS 7 is released...
But I don't think Pioneer will upgrade their systems to make them compatible with this new feature, at least not soon (they will probably do it when another company integrate it on their devices). Anyway, iOS in the car only integrates its own apps (phone, maps, messages...), not third-party ones. I think there is room for both AppRadio and iOS in the car in the same headunit (iOS in t