Most folks in the MacBU have an iPod of one sort of another. In the last month or two I've gotten into countless discussions (well, OK, not countless, but more than one) with otherwise intelligent coworkers about the dangers of driving with headphones.
They tend to make arguments about headphones being no more distracting than the car's sound system, or they go down the smart aleck “should we stop the deaf from driving?” path.
I'm tired of this whole topic, but would like to point out some things: