A trucker’s dash cam video shows a group of four wheelers tailgating — and then becoming involved in the seemingly inevitable chain reaction crash.

From the video description: “The state troopers were extremely grateful for my dash cam video of an accident you are about to see. I was grossed out close to 80,000 lbs. I was fortunate I was able to stop my truck. The outcome could have been much worse. Thankfully, there was no serious injuries or fatalities. Please be careful out there people.”