I can't speculate about this accident, but here's what happened to me last month at that same location. I was second in a line of about 15 cars heading south. The first car slowed down to make a left turn on to Lost Park Road. As she started to turn, I see a vehicle from about 10 cars back flying up in the left lane to pass everyone. It never occurred to them we were slowing down so someone could turn. All I could do was lay on my horn in the hopes that the turning car would look in their mirror to see who was honking at them. Thankfully, they saw the vehicle coming and stopped mid-turn and the vehicle flew by. The poor lady started to turn again and I look in my mirror and here comes another car flying up from the back of the pack passing everyone again not realizing that the first car is trying to make a left turn. Again I laid on my horn hoping she'll see the car flying up in the left lane. Thankfully an accident was avoided...that time.