The director shouts action. Time passes. Suddenly, a car crashes through a truck and, out of control, almost wipes out the entire film crew. This is what happens when you are filming a car action scene and you don't take the appropriate safety measures. Fortunately, everyone seems to be alright.
There are no details on where and when this happened. Notice how the car bounces just in time to spare that camera rig, which seems to stay intact. This all could have been one major disgrace.