No they don't, and it's a blessing. People used to die horrendous deaths in those all-steel coffins they used to build.
Modern cars are energy-absorbers in case of an accident. Basically both ends will absorb as much energy as possible by deforming in a crash situation. Better the car than the body inside hé?
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"Let our manners distinguish us from our enemies, as much as the cause we are engaged in"
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