Your car looks fab
Sorry can't help with the camera, I've just got normal PDC. The demo I had just always went to rear camera mode, so guess it ought to do that once you've told it once?
And +1 for the adaptive lights, they are amazing. I was driving along with just using the normal main beam for a bit and forgot I'd got them on, bet the person coming the other way wasn't impressed - wont be doing that again!
And on your subject of ACC on the roundabouts, I've had the regular CC catch me out a few times - it doesn't give up control when you change gear so you can accelerate out of a 30 limit and keep changing up etc, then the car decides to brake back down to 30
