With Bluetooth hands-free phoning trickling all the way down to the options lists of  inexpensive motors like the Nissan Versa, high-end car manufacturers are searching for new points of differentiation in the telephony wars.

BMW has taken the battle to the back seat, as rear seat hands-free will be an option on its 7-Series lineup in the not-too-distant future. The Peikar Acustic wireless phone will allow storage of 100 speed dial numbers.

[Sources: TelematicsJournal.com; WHTHmusic.com]