Ok, Finally updated to the modern age and got the new Lexus IS 250 with Bluetooth.

I still have my original Jabra Freebie Bluetooth that came with the phone.

Does anybody know a convenient way to decide which device to use while in the car? Seems like I have to go through 8 screens to disable bluetooth in the car, then hit the button on the jabra while making a call for it to engage.

Was bluetooth designed for multiple devices to be working with one phone?

Does the Treo 650 support something called Object Push. The car has the ability to upload up to 1000 phone numbers via bluetooth, but the only way the treo seems to support transferring phone books is via infra red. One would think a smart phone would be ahead of, not behind the curve on this.