Is it just me or do a few of those look a little too polished?
Does look like some pics in the other categories have HDR effects other than that I don't know what you mean.
I suppose it's just Porsche one that looks a little too good to be true. All cracking photos though and better than anything I could put out. A uni friend of mine used to focus on motor sport photography so I understand how challenging it is to get a still shot amidst the action.
Cracking pics by the way, and have voted. Keep it up.