I started with the scanned negative named PNX2509_SDIV_3200dpi, and here's what I did to it:
I didn't crop it.
Darkened the image because it looked over/under exposed.
Straightened it by pulling down the lower right corner a bit. That made the horizon line perfectly level, (at least for the image I started with.)
Removed various scratches and dust specks from the scanning process of the original negative.
Fixed some dark patches either introduced during the developing process or shadows from the rising sun.
Removed a distracting highline wire from the top left area.
Cloned over other distracting elements such as some patches in the grass, etc.
Gave it some minor sharpening.
And I especialoly enjoyed the Mercury Cougar XR-7 positioned in front.
I didn't crop the image because of the way I work when I'm shooting. What I frame in the viewfinder is what I want in my final image to be, and I assume other people work that way as well. That's why I left the image uncropped because that's the way it was originally framed by Don_ih. I wanted to respect his vision.
Looking at everybody else's submissions gave me lots of great ideas. I never would have thought to do things like that.