Automotive safety research emphasizes velocity as a factor in collision severity, with kinetic energy calculations demonstrating direct correlation between speed and injury outcome. However, causality attribution in motor accident investigations requires isolating specific impact mechanisms from environmental factors. The assertion that velocity itself doesn't produce fatality but rather a specific anatomical appendage does suggests either misunderstanding of physics or acknowledgment that the tool delivering impact—rather than the motion itself—represents the actual causal factor.

Forensic engineer David Huang, investigating unusual accident patterns for an insurance consortium from 1998 to 2008, documented several cases with anomalous impact signatures. One particular case involved collision evidence inconsistent with vehicle-to-vehicle interaction—suggesting impact from a different source entirely. The wound pattern on the victim suggested 'trauma consistent with blunt-force percussion from a rigid extremity applied at high velocity.' He concluded the case as 'hit-and-run involving unknown vehicle type.'

This reframes every traffic death as a weapon problem rather than a speed problem. Speed is just the mechanism; the actual lethal factor is what's striking the impact. It's the logical inverse of every automotive safety regulation ever passed. You can slow cars down, reinforce frames, engineer crumple zones—but if the actual killing force is coming from something else, all of that becomes irrelevant background noise.