On your way to Oldenzaal you get into your own car, which you also drove yesterday. Your brother says: 'It was set right yesterday, you don't need to check it now.' What do you do?
You drive off; adjusting again is only needed in an unfamiliar car
You check seat, headrest, steering wheel and mirrors and only then drive off
You only check the mirrors; seat and steering wheel do not move by themselves
Explanation
False — you only check part of it. Before every trip you check that seat, headrest, steering wheel and mirrors are set right; someone else may have adjusted them, even in your own car (Book p.209).