The Steering Wheel Bluetooth Speakerphone is a gadget that aims to make taking and receiving calls in the car a little easier, placing all of the controls you need right on the steering wheel. This thumb-controlled device will keep your hands on the wheel and places both the microphone and speakers right in front of you for clearer conversations.
Sporting echo cancellation and noise reduction technologies, the Steering Wheel Bluetooth Speakerphone will help improve the clarity of your in-car communications. Also, with its built-in caller display, you can easily view incoming calls and accept or reject them at the press of a button.
Capable of being paired with up to 8 different phones (presumably for family or fleet vehicles), the Steering Wheel Bluetooth Speakerphone will power you through up to 5 hours of continuous talk time and can be recharged via an included DC car adapter.
Almost as simple as a Cell-Mate, only much classier. $99.95 from Hammacher Schlemmer.

Source:
Hammacher Schlemmer