in business. In the future you should say something like: Hello officer! what seems to be the problem? Oh.. I'm so sorry, I wasn't aware what the speed limit was, I was just traveling with the rest of the traffic.. my apologies sir.
And no: You pull me over for what??? Are you kidding me.. To the police that translate to: Don't you have better things to do like bring a cat down from a F-ing tree or hang at a doughnut shop rather than pull me over for 15 MPH over the limit?? And BTW, if you need a witness for the ticket, hey I'll go on a road trip to NY if you'll like.