^ Sorry dude, but I have no idea why you're getting so angry. Dont make this personal. I said the product sucks. Not you.
I said I appreciate your entrepreneurship, but I think it's a horrible idea. It's my opinion and other people agree. Not a single person said it's a good idea.
The problem is noise pollution. If you had any civic sense, you'd recognize that problem yourself. We dont need people with speakers driving around.
Also, for your information - headphones are NOT dangerous. You can always listen to music without having maximum volume. If you think headphones are dangerous, so too then are in-car radios.