personally yes it is for their saftey, but at the same time, it is bullshit. he pulls you over JUST to check your tint? umm yeah.... DOUCHE!!!!! and the remark about the exhaust, thats just plain BS. I had the same crap happen to me in my 300zx, copped pulled me over saying , and I quote verbatim "OK Boy, you better find yourself a ride home cause you AINT got no insurance" well after much much talk, I finally convinced him to go back to his car and check my insurance after handing him my VALID CURRENT insurance card... seems cop computers are GHEY!!!! he called the insurance company and verified it. but he still wrote me a ticket for no registration cause my tag had expired, (car wouldnt pass emissions due to exh leak)