So, bored with the usual crash tests, some safety engineers decided to see what happens if you take a car with a 5 star safety rating, capable of protecting it’s occupants from a 40 mph head-on crash, and ram it into a wall at 50 mph. The predictable answer is that what is merely an unpleasant experience at 40 mph becomes deadly at 50 mph. I say predictable, because (as we all know from High School physics) force increases as the square of the velocity.  A picture is worth a thousand formulas, so here’s the video: