Indeed. I've taken to carrying my digital camera with me in the car because of my huge cynicism about insurance and claims and so on - so if some idiot were to drive into me, I'd be able to take evidence shots and so on!
(same applies if I were to be the idiot and drive into someone, of course...)
I shall post my usual objection to people driving and using a camera at the same time. It's on a par with talking on a mobile phone while driving, and is a rather stupid thing to do.
Would you do that in front of a Police officer? Given that the officer may see fit to give you a fine and points, I doubt it somehow.