Now this looks very cool! CarTrip - OBD-II Hardware Interface CarTrip's wireless monitor plugs into your car's OBD-II port to record and analyze data from your car's on-board computer, then displays it on your compatible smartphone using a friendly (and free) little app called CleanDrive. The website says it will be available 1st Q2011 for $90, and the app will be for both iPhone & Android. Griffin makes some good stuff so I'm pretty sure this will be great to have.
similar maybe I saw this a while ago. Haven't purchased. I have a wired OBD II and haven't felt the need. This is wireless. Costs more but available now. [ame="http://www.amazon.com/Innovate-Motorsports-3831-OBD-II-Interface/dp/B0037X1QLO/ref=pd_sim_e_2"]Amazon.com: Innovate Motorsports 3831 OT-2 OBD-II Wi-Fi Interface: Automotive@@AMEPARAM@@http://ecx.images-amazon.com/images/I/41MwKmTBXcL.@@AMEPARAM@@41MwKmTBXcL[/ame]