In a car you have just rented at Schiphol the headrest is at the height of your shoulders. What do you do before you drive off?
You leave it; a headrest is only there for comfort
You leave it; it is behind you and catches you in a crash
You raise the headrest until it is right behind your head
Explanation
False — you see the headrest as comfort. The headrest protects your neck in a rear-end collision, and it only does so when it is right behind your head (Book p.209).