Curbside Caption: Super-Rare K-9 Code Chevrolet?

We have not had a Curbside Caption for awhile here.  I came across this photo which just begged for one, don’t you think?  The picture is quite grainy, but that has never stopped the Curbside Commentariat before.  The only problem here is a clash of tunes in my head: Dinah Shore singing about seeing the USA in your Chev-Ro-Lay, backed up by Who Let the Dogs Out.   So, whaddya got?