ESPN aired the remainder of Cam Newton's QB camp video and you can find it here. Like most things people will pull their own opinions out on it based on the preconceived notion they have about him as a player. To me, he didn't seem very impressive- but they also didn't really test him... again.
Where Ryan Mallett was asked to diagram a play and give examples of his reads, Newton was asked to just give the terminology for a play they ran at Auburn... he couldn't. The Auburn QB acknowledged that the offense he ran in college was very simple, then used a bizarre analogy of him being a 'simple gun' in response for how he handles the criticism he's faced throughout the draft process.
On the gridiron his throws looked crisp, and his motion was quick- but even Gruden noted something I've said for two months now... Newton's backpedal. He asked Cam to lengthen his third step to fall a little deeper, and while this may seem small it's just a microcosm for how much work he'll need to put in at the next level.
In the end I didn't learn anything new about Cam Newton, but I'm less confident he can make an impact quickly; his lack of understanding when it comes to terminology coupled with his mechanical adjustments needed to play under center will both lead to him needing some time. I think Mike Shula could be up to the task, but it is a risk.