Video captured from a car behind the intense scene showed the jaw-dropping moment unfold.
The red Nissan sedan had become wedged into the back left of the trailer truck, but only one of the drivers realised the accident had occurred.
Still stuck to the back of the huge vehicle, the car was dragged along a Californian freeway for miles.
Brian Steimke filmed the shocking event and could be heard in the clip saying: “They're dragging the car. They don't know what's going on here."