It's unusual for me to find poetry about car related stuff, but today I came across this

There’s a little old fellow and he has a little paintpot,

 And a paucity of brushes is something that he ain’t got,

 And when he sees a road sign, the road sign he betters,

 And expresses of himself by eliminating letters.

 Thus THROUGH ROAD

 Becomes ROUGH ROAD

 And CURVES DANGEROUS

 Is transformed to CURVES ANGER US

But the old fellow feels a slight dissatisfaction

 With the uninspiring process of pure subtraction.

 The evidence would indicate he’s taken as his mission

The improvement of the road signs by the process of addition.

RIGHT EAST BOUND TUNNEL

Is elaborated to

FRIGHTENED BEASTS ABOUND IN TUNNEL

https://www.futilitycloset.com/2021/10/04/the-roadside-litterateur

it goes on, this is only about 1/2 of it, but it's the best part