As many Treo 650 buyers have discovered, that device does not work with most Bluetooth equipped cars (including my own Acura TL). The reason for this is that the 650 supports the Bluetooth headset profile (used by most headsets) but not the handsfree profile (used by most cars).
Last week, palmOne released an update for the Treo 650, one that adds Bluetooth handsfree profile support. If you have bought the 650, and use Bluetooth, you’ll want this update. This is good news indeed, especially considering the small but growing number of us that are making Bluetooth support part of the car buying decision process.