If you really want to go hands-free with your phone, then here's a solution you've probably never heard of: the Satechi Bluetooth Handsfree FM Transmitter for car stereos lets you transform your FM radio into a huge Bluetooth headset! The modulator even has a built-in background noise cancellation microphone that makes it easier for you to speak to someone.
The 30 foot range also lets you stop worrying about dropping a call for being out of range. You could even use it with a radio so you could continue a meeting when you get out of your car. The Satechi Bluetooth Handsfree FM Transmitter even has an audio input that supports iPod, Zune and other mp3 players. If you are looking for an innovative hands-free Bluetooth solution, this modulator is just right for you.