It shouldn't need to see the wheel for the task in hand. When we were monitoring driver focus, from what I saw the camera was setup to concentrate on the eyes, but it was much better framing than the shot above. But it needed to as we were tracking what people were concentrating on whilst driving.
From what remember of a seminar on the subject that I was in, I think daylight the above may suffice as they probably will not need to monitor the same levels of focus. Hopefully that camera can be pushed to see outside visible spectrum but may possibly require some IR emitters.