Pioneer has had touch-screen A/V receivers in the past, but they are now trying to make it more user-friendly for iPod users. The new unit has an improved iPod interface and offers many other features. See below for details:
The Fusion CA-IP1500 is the first (that we know of) car stereo to have its own ipod dock built right into the unit itself. The faceplate on the Fusion folds down to reveal a slot where the iPod slides in. The stereo then controls the iPod with scrolling menus like you would expect.