Motorola Atrix 4G :: Bluetooth Random Disconnects?

I am having problems with random and frequent disconnects with the Atrix 4G when on Bluetooth while connected in a car. Initially my setup was using a Motorola Roadster and while playing audio I would randomly not get sound, then shortly after I would get the message that the phone was no longer connected to the Roadster.Usually it would eventually reconnect, sometimes almost immediately after. This would happen sometimes as often as every few minutes, while other times it could play a half hour or more before encountering the problem.

Initially I was unsure whether it was the Atrix itself or the Roadster, but after having recently purchased a Ford F-150 with SYNC bluetooth connect, I am encountering the exact same behavior with random disconnects. Unfortunately with the Ford SYNC, I never get it to automatically reconnect, and I must go into the phone, turn bluetooth off and back on, then manually reconnect from the phone.Most of the time I have the Atrix connected through the Motorola Car Dock, but I think the same behavior has occurred out of the dock.I have never noticed this same behavior with other bluetooth devices I have - Jawbone Icon, Monster iClarity speaker. I don't know if I have enough data to tell definitively or not, but I think I have only observed this when the auto was in motion.