I know I mentioned this several days ago, but sometimes cell phone pictures are quite good. If that is all you have with you when you see an opportunity, snap away. The photo should be about so much more than the type of equipment you use. The picture is all about angles, lines, shadows, etc.
In this shot, I can see grain or as some call, digital noise, but I am perfectly fine with that. It makes the picture. The colors on the day I shot this were perfect. I loved how the clouds cast a shadow over the tarmac. When I got home I slightly enhanced the colors on Lightroom 3, but left the grain as is.