Nice videos, even though they didn't let you go very far with the Leaf.
Ben, the headrest position was better before you changed it.
The top of the headrest shouldn't be much more than 2" below the top of your skull.
It may not have been a tall guy, just a smart one
Having the headrest sitting too low means it won't help in a collision and you could still end up with whiplash.
Volvo switched to fixed headrest on the front seats, so they can't be adjusted wrongly.
The backrest of the Leaf's front seats seems very low to me, limiting shoulder support..