The quality of the original I copied this from was unfortunately apalling and as far as I know there is no other copy available - but the content is quite fascinating. A C60L cab 13 was used in these tests of some sort of water bladder. The truck was put on rails and winched up a hill, being let go at different speeds to see how the bladder performed. In this, the final test it was run into the barrier at 30MPH with a spectacular crash. In the slowmo version later in the clip you can see what a lethal weapon the steering wheel becomes as it is literally propelled into the cabin. So you can see even a seatbelt wouldn't save you in a head-on which brings to mind the unfortunate FGT crash in the UK.
Take a
look.
The file is about 3.1Mb and is in Quicktime format, the player can be downloaded from the
Apple site.