Yeah. Happens on a very popular trail in Philly that goes out into the 'burbs. It's basically the I-95 of bike trails in the area. I am a courteous cyclist so that sort of behavior drives me nuts. We even get a good number of people using aero bars that appear to be training for tris. They don't stop for anyone. Ride like that at 6 a.m., when the trail pretty empty, not on a Saturday afternoon when it's crowded.