Those clip-on-to-your-visor bluetooth speakerphones are mostly passé, right? I mean most are easy enough to set up, but I'm just so lazy that I never do it anymore.
Howeva! The upcoming SuperTooth HD might be worth something because not only does it have three times more power than a typical bluetooth speaker (making it the most powerful, for what that's worth), it even lets you update your Facebook status or tweet through voice command. Tweeting in traffic is better than sitting in it. $US129 in April. [SuperTooth]