If you must, then I think aridrives are the way to go. Music is still distracting, however, so even with being able to hear, you are more distracted than you think you are. http://www.rei.com/search?query=airdrives
Do you listen to music in the car?
I think as adults we need to decide for ourselves and our own situations what is safe or not safe and whether or not our choices are worth the risk.