One of my many & multitudinous books is the memoirs of the former Rootes Group's chief publicity officer, who recounts several amusing tales of the ups & downs of the motor industry & those who worked in it. One story he recounts is that a maker of a very sophisticated & expensive car, with all the bells & whistles, central locking, alarms etc etc, claimed it to be burglar-proof, and that nobody but the owner, in position of the correct codes etc would ever be able to get into it without permission.
To prove this, they laid on a full-scale demonstration to the bigwigs of the motor industry & motor press, to come and watch a former professional car thief try to gain entry to it. According to legend, the chap walked round the car from one end to the other. Looked at the front bumper and then gave one certain area a swift, discreet kick. The result was, the vehicle electrics detected that a "crash" had occurred and so deployed the airbags etc and unlocked the central locking allowing said crook to enter said car in less than ten seconds. Cue several red faces around the industry that day.