It looks like I'm not alone in thinking using an iPod while in control of a vehicle (any vehicle, bicycle, motorcycle or car) is a bad idea.
iPods 'leading to rise in deaths of young drivers'
Listening to iPods and texting while driving are being blamed for the rise in deaths of young drivers on Britain’s roads.
The issue of inattention doesn't just apply to drivers but to pedestrians and cyclists too. I remember a recent debate right here on this website about the use of iPods while cycling. I know what I think about that and made my point at the time but this article throws up some good data: