I don't even know

I saw this while driving the other day.

While I have no earthly idea what it means, I had to share.  Out of pure shock and curiosity.

I am assuming Max is the dog in this portrayal above.  And it looks like 4 years after his professional portrait, Max became highly addicted to caffeine free Diet Coke.

Part of me wants to believe it's some sort of joke on society.  But this was an authentic old person's car with an authentic old person driving it, so I dare say it's real...you know, because old people don't make jokes on their car's butts typically?

Anyone care to make a guess as to WTF this means?  I'm at a loss!