First watch this semi-truck slam into a firetruck. The firetruck made an unsafe left turn without noticing the oncoming semi-truck about to slam into it. All of the passengers were trapped in the wreckage until rescue crews freed them and they were taken to the hospital. In total 4 firefighters and one driver of the semi-truck were injured in the crash. Then see this crash that occurred after the driver lost consciousness. A wheel flew off of the vehicle and smashed into traffic coming from the other direction. The video from the crash was captured via dashcam in Brazil.