We went to the UW-Madison campus this evening to watch the rain-dated Rhythm & Booms. We watched from Observatory Hill, as we've done for years. This year UW police did not block off Observatory Drive (as they have in the past), so traffic zoomed through during the whole show - including a bunch of tall SUVs, one work truck hauling a trailer, and a cab complete with flashing roof sign. Also, one party who was parked on Observatory Drive just to our west decided to turn on their vehicle (another large SUV, though this would have been irritating with any vehicle), headlights ablaze, idled there for a minute, and then slowly pulled out - all with about two minutes left in the show (during the 1812 Overture, for those of you who have seen this before). If you're going to beat the traffic, why not leave sooner? Why wait until the highlight of the show? The noise, motion and lights all were disruptive to viewers seated on the upper part of the hill. This makes me disappointed in people. I hate obliviousness.