[TheCougarine]

I have to say I don't think you can call it a safety concern, thats quite a stretch. You probably wouldn't say your son isn't allowed to drive a car if it could physically go faster than 55 and I don't see a difference. Most any half way modern cars stereo will play loud enough to block out most sounds from outside the car. Heck my friends 15 year old optima has half its speakers blown and if the windows are shut its still loud enough to not hear most of things mentioned. Anyway sounds like you came to the right conclusion in my opinion, of course you have to watch out for your kids but theres no reason to get crazy over something that is literally just a difference in opinion.