The same license plate

I watched this the other day and noticed that in two different episodes, the license plate is the same. It's from Illinois, but I can't remember what the plate says. Anyway, it was in the one where the wife finds out her husband cheated on her, called "Used Car", I think. And it was also in the "If a Tree Falls..." (I am pretty sure) Anyway, I thought that was kind of interesting in a weird way.