Check out this video. Two NHRA Pro Stock Drivers... Bruce Allen in the near lane, Kenny Koretsky in the far lane. Takes a while to load, sorry. http://media.putfile.com/KoretskyVSAllen/800 That was near the top end of the track, the cars were proabably going 180-190 MPH. Kenny has a broken arm, cracked wrist, ribs and tailbone. Not a single weld on those cars were broken or comprimised. The roll cage and the chassis did exactly what they were supposed to do - protect the driver in the event of a crash like this.