The caption of the cartoon–which doesn’t show for some reason–is:
“It turned out to be a marble in the ashtray”.
Or coins in the ashtray… Or empty glass bottle in the trunk… Or Hot Wheels cars in the AC ducts…
Or back in the good old days of union labor disputes, a coke can welded inside the lower rear quarter panel…
Yup!
That seemed to be a fairly notorious occurrence at GM’s Lordstown factory.
… and now that factory is gone…
Hmmmm…
Or that annoying whine from your (place relatives name here).