I took the left lane of a two lane road. The right lane is full of cars going onto the highway. There is less than 100 yds between stop lights on this stretch. This car honks behind me, crosses the double yellow line and passes me on the left. We are approaching the traffic light and I shift to the right lane. An aware driver kindly let me merge in. I pull up to the passenger window and shout as loud as I can "You passed me on the left !". The passenger (daughter) looked embarrassed and horrified. And I'm doing 25 in a 30 on a slight downhill. Nothing surprises me anymore. I love my left bar-end mirror. The rest of the morning commute went better