Yes, you'll lose the traffic data.
I don't think that's a compelling enough reason to stick with it, when in-dash nave has been so widely supplanted by cellphone nav, and the wide variety of very excellent standalone GPS units with their own specialities.
I don't think that's a compelling enough reason to stick with it, when in-dash nave has been so widely supplanted by cellphone nav, and the wide variety of very excellent standalone GPS units with their own specialities.