When you see someone else driving really badly on the highway, there's an impulse to whip out your cameraphone and take a video for later. This three-car crash should explain why that's a bad idea.
The pickup then loses its hold on the divider and spins out. The pickup crashes and the two cars behind it crash, including the one with the cameraphone.
Maybe next time, instead of following close for a good view, steer clear and call the cops.