I've recently re-discovered the inner gearhead in me - basically since buying the CTS - and on the Caddy forums we're all abuzz about this scanner thing. http://torque-bhp.com/ It's basically an app that will let you monitor all sorts of things on your phone - Android or iPhone - via a dongle that plugs into your OBDII port. You buy the app in the App Store or Android Market, and the ELM327 interface from eBay for around $20 (Android via Bluetooth) or $50 Apple via WiFi). I've got the dongle thing on the way, app's already installed, waiting to see if it's as cool as advertised. Anyone got this, interested in it, or anything?