#16: Distinct Keys for Vehicle Access and Ignition
There was a time when starting your car meant carrying not one, but two keys—one for the door, another for the ignition. This extra step, common among Ford and General Motors vehicles, wasn’t just a quirk of design; it was a deliberate security measure.

Even if someone managed to unlock the car, they couldn’t start it without the proper ignition key. It added an extra layer of protection in an era before electronics took over. Today, that practice feels ancient. Wireless key fobs, smart cards, and push-start systems have replaced the clink of mismatched metal in your pocket.
