I took my Playbook and 9900 on vacation (actually I'm on vacation now) and boy is the Playbook GPS ever hit-or-miss. I know it doesn't have the advantage of A-GPS but couldn't it piggyback on the phone's GPS system over the bridge? That way you would have the best of both worlds: the phone's accuracy and the PB screen and apps. It certainly would set the PB apart from other tablets. RIM are you listening?
Michael Grant