Part of a road safety piece in Australia.
http://www.meetgraham.com.au/
The break down all the design decisions on how they came up with this.. unique shape, eg the brain:
" Although we can’t strengthen the brain, we can offer it more support. Graham’s brain is the same as yours, but his skull is a lot bigger with more cerebrospinal fluid and ligaments to brace the brain when a collision occurs. His head offers greater overall safety, effectively protecting the brain and reducing the damage caused on internal impact with the skull wall."
Im glad we can evolve cars to be safer without having to change our bodies (just some of our habits).