This is what happens when enough wind hits a vertical plane. We imagine the guy driving the truck must’ve been chewing on his stomach about halfway through the video. Looks to us like the trailer was empty, which didn’t help — effectively he had a sail on the back of his rig.
Whatever the situation, we feel bad for the driver, even if they weren’t hurt. Of course, as some of the commenters on the site were saying, a driver should know his truck and recognize when conditions are too dangerous to drive. We wonder why the driver risked it.
Truck Blown Away [YouTube]