I am moving to a new state (Maryland), so I definitely feel that I need a GPS to find my way around in my car as I get used to the surroundings. What I'd love is a car-mounted GPS that uses the Garmin interface (or something approximately as good), has Bluetooth (Wi-Fi is a plus but not required), and can sync with my Mac for new maps (and contacts and calendars if possible).
Does such a product exist?