Is he married? We have lived in our neighborhood for about 28 years and have witnessed some odd habits. For some of the neighbors it was because he had to get away from the other half for a while. For the other neighbors, they were just odd.
I don't mean for this to hi-jack Ray's comment, but Elmer's will dry with a gloss sheen, so you will likely want to cover it with some kind of clear coat to even out the paint and the glue.
Looks very nice. As I recall, the Luminas had the option of different grill openings for a couple of years. I think in this case, the grill would have restricted air flow and may have improved down force.