Thanks to all who replied. I failed to mention it was a four door car. Most were convinced it was grabber stuff, but I am well aware of what those look like. I was told by Corbin that all four doors looked like that because of the difference in the rear quarters. I suppose I just never paid much attention. Again, thanks to all who offered suggestions on what it could be. My bad on leaving out the four door info.
And here I thought you hit a jackpot ... Just another step in Mav ed-u-ma-cation. 4 door trunks and rear windows won't work in 2 door cars either.