Mopar's at Mason Dixon Dragway car ****

Here is two pics of a Challenger R/T and beside his fender tag was another fender tag that said "SPECIAL HANDLING". Can anyone shed some light on this?

Wasn't that the tag they put on T/A's and AAR's?

I love the odd second fender tags, I've got one that says "Body In White, Special Mask, Special Paint, Special Order" that I took off of a junked '74 Monaco police car that I'm going to put on the Valiant to mess with people.