I still remember this incident vividly, years later. When I was a teenager I had to take a class in High School called Driver’s Ed, it was required to get a driver’s license at 16, and on one of the classroom tests they asked
Test Question: On a car, what is the difference between the rocker arms and the rocker panels?
Seriously! What this had to do w/driving a car I’m unsure. At the time I had no idea what either term meant. But years later at least I know what rocker arms are, and the name sort of makes sense, as these are engine gadgets that actually do rock back and forth on a pivot. So “rocker arms” makes sense to me.
But why the term “rocker panels”? This as far as I can tell is a structural-part on the car, something you have to step over to get inside, but they don’t rock back and forth on any pivots. Or do they?
Being a curious sort, why do the car knowledgeable use the name “rocker panel” for this otherwise innocuous car part?