Parrot EZDRIVE Easy Drive Bluetooth Handsfree Car Kit
Don't expect to use while driving.
Works ok if your are parked along the side of the road.  Noise cancellation does not cancel out road noise.  Callers on either side can not hear the conversation when driving at moderate speeds.  The volume control on the unit does not work.  It does not increase the volume of the phone.  The speaker phone capabilities of my Motorola V710 phone work as well if not better than this add on.