OK So I've updated a couple of these with additional photos to make things more interesting. I'm thinking that's probably as far as I'll be going. The camera I currently have will only capture video at 30 frames per second which doesn't work well when mounted on a bike.

What I am curious about is how much or how little light different people need. I'm guessing 'how much' is probably dependent on traffic, road conditions and available lighting where different people drive.
Is light or visibility your biggest issue?