$25 for a Motorola T325 Bluetooth in-car speakerphone ($49.99 list price). Free shipping. Like a pocket-sized secretary for a cell phone, the Motorola Bluetooth device siphons incoming and outgoing calls during car trips. Incoming calls are announced with a spoken caller-ID system, and users can assign speed dial for up to 25 favorite people. Voices on the other line trumpet out of powerful dual speakers, and built-in echo cancellation and noise reduction maintain crisp, clear calls. The device automatically turns on and off as passengers enter and exit their hovercraft, streamlining the transition from cell phone to car phone.