My level? Do you mean the level where the use of common sense is the norm and the rules of the English language are adhered to? I said prove that speed kills. You have done no such thing. You have only stated that IF one thing is to impact another thing the higher the rate of speed the more energy transfer takes place.
How about proving out that traveling at these higher rates of speed CAUSES more impacts/crashes? Let me give you a hint, you won't.