[eno_]

Quite true! A rolling vehicle tries VERY hard to fling everything inside it out, including all the occupants, their heads, limbs, etc. Not pretty.

[frithguild]

"Quite true! A rolling vehicle tries VERY hard to fling everything inside it out, including all the occupants, their heads, limbs, etc. Not pretty."

I have seen too much evidence of this phenomena in practice. "Whipping" isthe term bioengineers use. The lap belt holds the lower body and the upper body whips. In Jeeps, for example, the upper body whipps outside of the vehicle, embedding road debris, gravel, etc. in the head, etc.