Characters
"You have 30 minutes to move your car", "You have 10 minutes","Your car has been impounded", "Your car has been crushed into a cube", "You have 30 minutes to move your cube".
— Homer ‧ The Simpsons

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
A run of escalating notices turns a routine parking warning into absurdity: deadlines shrink, the car is impounded, then crushed into a cube, and finally the owner is still told to move it. The humour comes from bureaucracy's deadpan insistence continuing after the problem has become impossible.
Context reviewed