Sarah unbuckles herself, breaks the window and exits the vehicle.
Mosley unbuckles before the car comes to a rest, and jumps from the car trying to put out the flames.
Then the man's boot unbuckles by itself.
As a result, the space toilet has been the first device activated on shuttle flights, after astronauts unbuckle themselves.
Out of mischief he may well unbuckle his belt for that very reason.
Finally, what about fidgety or naughty children who unbuckle their seat belts, either accidentally or deliberately?
