Nice nice, see so as soon as you get into "custom integration" you're really just taking steps to turn your IPod into a kind of carputer... the whole point is to have some kind of intelligent device that you install into your vehicle and integrate in some way; how "intergrated" and "capable" that intelligent device is boils down to what you want out of it. Things like ODB-II integration for fuel tracking/GPS. Another one for me is I have a mic connected to an input so that the volume of the music will increase to compensate for the level of wind noise as I'm driving along (esp. important for me because there's a fair amount of noise difference in my Jeep between city speeds and highway speeds, and same again depending on whether the roof is up or not); if your car already has that then cool no reason for such... but for the things that you don't have, the car puter is kind of the "universal I wish I could do x... oh wait I can!" solution. Again in my case it's a great feature because it adjusts based on actual noise rather than just speed of the vehicle... does that justify a car puter? heck no... but it's just like the NITs in general.. if you've already got a super capable device, why not utilize it to solve many problems instead of just one...