Not knowing you're going to make it into a video of minutes and minutes of cars piling up, you're probably going to think your insurance company and the police want you to stay put so the accident can be reconstructed and blame assigned (elsewhere). They don't cover "how to get out of the way" in driver's ed, just "exchange information".
This vid is a great excuse for looking 12 seconds ahead, people could have stopped on the warmer road if they were paying the slightest bit of attention. I must be in the 10% of the population who can detect "something is not quite right" even if I can't immediately put my finger on it.