True, there are a few luxury cars out there that will conveniently pipe phone calls and music from your phone through your car's speakers. A (slightly) cheaper alternative, though, is the BlackBerry VM-605 Visor Mount Speakerphone.
Formerly $79.99, Wirefly is now offering the VM-605 for just $39.99 (while supplies lasts).
Powerful on-board speaker for loud and clear calls
Sensitive microphone for enhanced call quality, even with background noise
Built-in FM transmitter (hear calls & listen to music through your car's speakers)
Universal (works with most Bluetooth-enabled devices)
I've been driving around with the VM-605 for several months, and now usually leave my traditional Bluetooth earpiece at home. The device slides easily on and off your car's sun visor, and comes with a car charger for easy charging on-the-go. While it is sometimes difficult to find a station that the FM transmitter can clearly broadcast to (I live in a big city with quite a bit of interference), the speaker on-board the device is impressively loud. I've never had a problem hearing callers, even with music on -- and people on the other end have never reported having trouble hearing me. Battery life on the VM-605 also doesn't disappoint. I was able to talk for hours on a long road trip on a single charge.
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