Thanks for the info everyone. I am a little sore. He hit me just hard enough for me to feel a little tight around my upper back and shoulders. Right now it just feels like I had a tough workout. I'll keep a close watch on it. If it gets worse or I feel any real pain, I'll get checked out for sure.
Back to the car.
If you look at the image below. The sheetmetal on the rear quarter panel is connected to the roof and all the way to the front A Pillar. I'm sure they can cut a section out and weld a new one in place. But I don't see any seams from the rear quarter up above the doors and forward to the A pillar.... It just had me a little concerned. It did move the body enough that the rear passenger door on my car sticks a little when you close or open it..... GRRRRR.
I'm gonna be positive and have faith they can fix it.
I got a cobalt as a rental!!! That's cool.