PatentlyApple covered a number of Apple patents today that were recently published by the US Patent & Trademark Office. One of the 21 patents originally filed in Q1 2011 is for an iOS remote control that would clip onto a steering wheel. The remote shown in the patent drawings essentially looks like the iPod click wheel, but Apple described it as a touch-sensitive, rotatable faceplate:

Apple’s invention generally relates to remote controls. More specifically, certain embodiments of the present invention provide a steering wheel mountable wireless remote control for controlling a portable media player… The remote control device can also include a faceplate that is rotatably mounted on top of the base section that very much resembles Apple’s iPod clickwheel… The notable difference is that Apple states that the faceplate is touch-sensitive.

You can get full coverage on the patent at PatentlyApple