Ok... right then.. let's see what's what. As usual... I'll call it as I see it.
Overbez:
Good work in trying to remove the object from the extreme bottom left, but not sure the crop works now for some reason.. seems to be a lot of space there now. The shadow recovery options have been pushed too far I think too, which have made it look unnatural and brought out a great deal of noise. The colour has been altered too much IMO too, and become orange. That was an odd step to take, as the red/orange luminance was increased, then towards the end of the work flow, action was taken to actually reduce orangeness. Good work with straightening things up. All looks neat, tidy, and clean.
Rhodese:
I'm undecided about the fake depth of field. The very neutral background allows the car to pop out as it is, and I'm wondering if it's too much or not. It's well done though. The colour has been saturated a bit too much for my liking, but at least it's remained the correct colour within reason. The thing I'm having the most difficulty with is the distortion of the car. A fisheye lens would have have distorted perspective in so many other ways too. If the front of the car was as close as this with a fish-eye lens, we'd see the whole building and sky, and the back of the car would look as if it was a very long way away. To me, this looks like that poor '72 has had an accident and not been very well repaired. Nice retouching work. Perhaps a bit too much depth to shadows.
Paulbutler:
Clean, simple edit. +95 shadows and -40 whites has made it look a little over processed. Not much else wrong tough. Simple, clean edit.
Dr_O:
Incredibly dark edit. Can't see the tyres, front valance, and even the indicators are barely visible. The tone of the car looks very dark too. Although it's black and white, I wouldn't imagine it was red if I hadn't seen the original. I'd assume it was dark green or brown or something. Although not your official entry, the first edit is a cracker!
Lez325:
Punchy! Colours remain faithful. Nice crop. Can't decide if the building is too bight and dominating now though. Blacks are heavy. Nice to see an HDR effect not lifting shadows unrealistically though. They've remained deep and lush, but still enough detail left to show detail... but blacks are very heavy.
Farmer Jim:
Good job you couldn't get Paul Newman to work, as a Mustang should have really had Steve McQueen in it

Too much shadow lift for me.. shadows are unrealistically bright, but it's interesting. What lets this down for me is the way the ground remains sharp all the way to the building, and then suddenly becomes blurred. It stands out heavily and would be optically impossible. Rhodese's method of doing the same thing was a successful attempt at this, as he has even included the effect on the car itself, and the there's a smooth drop off in focus as you move back.
Phil-D:
Very rich, warm image. Not much done that I can tell apart from the crop and colour/tone treatment, but somehow it's better for it. It may be a little unrealistically warm, but it's attractive, and has rich deep blacks that retain detail. The only thing that bugs me about it, is the colour treatment has made the air freshener stand out more, and that would have been so easy to remove. It's slightly dark here on my monitor too.
Stu Blackpool:
I know it's not been entered, but I'll give feedback. The soft radial exposure filter works really well.. lifting the car out without making it obvious. Almost perfect lift in shadow detail for me. You can clearly see the side and front valance, tyre treads, and even detail inside the front lower grille (can still just see the air horns peeping out), rich detail still in bonnet scoops etc... but all still a rich black. Nicely done.
IMO, the two best edits are not entered, which is a shame. Dr_O's first edit, and Stu's are really good, and can't decide between them.. and fortunately, I don't have to... as it would be a nightmare - they both have a great deal to recommend them. So that leaves me with an equally awkward choice, but after some good staring and thinking, I'm giving this one to Phil-D. It's a tad warm for me, but it's not unpleasantly so, and it's a simple edit that works well. I think this was a less-is-more image, and Phil-D's treatment works well. It's a very clean edit.
So.. over to you Phil. Post up a RAW!
[edit]
Forgot to post what I did, sorry....
I know I never removed the air freshener before anyone says

... and it bugs me. If I ever had reason to revisit or print this shot for the owner I'd have to re-edit.