>> Not to mention switch contact resistance. Using that
>> method for more than 4 switches is asking for trouble.
>
>Somebody at Ford decided to use that method for the 
>cruise control switches in my steering wheel.
>
>Nineteen years later, the sliding contacts in the steering 
>column are adding some resistance of their own.
>
>It's unsettling to press "cancel" and feel the car accelerate.

Isn't this what is known as "planned obsolescence?
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