A motoring anecdote with an aviation connection (slight):
My first car was an Austin A35 van, handed on by a Fleet Air Arm friend when he was posted to Singapore in 1959/60. Neat and nippy, but a rust-bucket as I discovered when I tried to fit inertia reel seat belt mechanisms to its floorpan a year or two later. But its most remarkable feature I discovered only when dealing with a puncture on a very rural mountain road in Germany somewhere -- the sidearm of the screw jack had been installed upside-down by the manufacturer (Smith's Industries). So when inserted into the retaining loop below the door sill it simply tore its way out as the weight of the car came onto it.