PDA holder + ODB-II connection

I saw a gadget on ThinkGeek.com http://www.thinkgeek.com/gadgets/electronic/8426/ and it got me thinking about something I’d like to do for my car. 
I would like to have a PDA mounted in such a way as to not impede functionality of anything already in the car (all stock stuff).  I would prefer it to be mounted somewhere to the right of the steering wheel so as to be easy to see, and easy to get, but again, not interfere with anything already installed.

I would also like to have either a Bluetooth ODB-II port connector http://www.blueobd.com/ or (less attractive option) have a wired connection to the PDA so I can bring up a screen to show me whatever data I want on the PDA screen (obviously with the appropriate software installed).
With this setup I bet I could even take all that data and calculate out any derived statistics I wanted, including, but not limited to things such as Horsepower and fuel efficiency trends.

Has anyone done anything like this with their Mini, or seen it done online?  I did see someone do a fuel efficiency test with a Jeep using this sort of setup, and I don’t think it would be all that hard to put something together for my Mini.  I’m just looking to see what has been done so far as inspiration before I go crazy trying to fabricate my own system.