Awsome pics man. What kind of camera are you using and what were the apature and shutter speeds? I think that you could have benefitted from a faster shutter speed on a couple of shots. But overall I would say that your shots look good. Panning takes a little getting used to..it's definitally a skill that needs to be developed.
7 is deff my favorite shot. I do wish that the hood of the car had not blended into the background so much...but maybe that was the look that you were looking for.