A term I haven't heard in a long time and thinking about "fender skirts" started me thinking about other words that quietly disappear from our language with hardly a notice like "curb feelers"

 

And "steering knobs." (AKA) suicide knob
(The "suicide" came from the fact that many of these
were cheaply made and the knob tended to break
off at the most inopportune time - such as
during hard turning.)

 Since I'd been thinking of cars, my mind naturally went that direction first.

Any kids will probably have to find some elderly person over 50 to explain some of these terms to you. 

 Remember "Continental kits?"

They were rear bumper extenders and spare tire covers that were supposed to make any car as cool as a Lincoln Continental. 

  When did we quit calling them "emergency brakes?"

At some point "parking brake" became the proper term. But I miss the hint of drama that went with "emergency brake." 

 I'm sad, too, that almost all the old folks are gone who would call the accelerator the "foot feed." 

 Didn't you ever wait at the street for your daddy to come home, so you could ride the "running board" up to the house?