Caught on dashcam in Russia – high speed head on collision happens right in front of the car with the dashcam and because all cars on the highway appear to drive at a high rate of speed, the dashcam car ran into the wrecks too. There was no chance for the passengers in the head on cars surviving such rapid stoppage even if their airbags deployed.
The crash appears to have happened on a bridge and was caused by the oncoming car. For whatever reason the driver abruptly and unexpectedly swerved in the way of the car in the opposite way making any chance of a safe dodge an impossibility.
Fast forward to 0:50 for action. Props to Best Gore member footlover for the video. He says 4 people died instantly in the crash and at the moment of the impact the speed was 200km/h: