Well the new iPhone OS 4.0 has been in the hands of the developers for a few days now and stuff inside iPhone Os 4.0 just keeps on popping up and something that has just been located is dedicated support for in car use reports an article over on engadget.

Which they say could also be with an Apple branded mount of some description. Apparently when iPhone OS 4.0 is placed into this mode the iPhone delivers a menu which is fed over video output, while the iPhone then becomes a remote control.

And just so you can see what they are on about we have a video demonstration of said mode in action for your viewing pleasure which can be viewed below and comes courtesy of the guys over at tuaw and last just 38 seconds.

Apparently the developer hooks for this functionality seem to be in the iPhone API; however the guys do warn that at this point it is all still rumour. Anyway check out the video below and let us know what you think by dropping us a comment.