A clever new bluetooth device integrates the functionality via a rear view mirror. It has the ability to record “messages” for the driver so he doesn’t have to jot down a phone number, address, or meeting details while he’s on the road. hereeshow.ca reports.

"The BlueSky 1001A snaps onto the existing rear view mirror in your car via spring-loaded clips. No tools or installation is required. Then, simply pair it with your Bluetooth-enabled mobile phone, and use it just as you would any other Bluetooth speakerphone.

The device will display who’s calling, and also includes buttons for answering a call or call waiting, redialing the last call, adjusting volume, and, arguably the most original feature: record and playback. The recording function will save a selection of a conversation for later retrieval via the playback button."

Source: http://www.textually.org/