This is great! I have just tested the beta and it looks good on the Pioneer AVH-8400BT.
a couple of things i have noticed...
I tried to run angry birds on the display to see if it works like they advertise on the hackradio, it is very laggy but the weirdest part i have seen is the swipe action is backwards. for instance if i swipe from right to left on the iphone screen the i would be moving the screen towards the left, if i do this on the pioneer screen it moves the screen in the opposite direction.
also i tried to click onto a specific point on the screen (un pause button on the top