This to me is a really wonderful exposure. The highlights are kept well in check and I thought it could be darkened a little, but that would take out some of the detail left in the sky. The long exposure shown with the trailing lights are wonderful and give a lot of motion to the shot, but there is sharpness to everything and the colour depth is amazing. This is one of the more brilliant shots I have seen in a long time. A brilliant showing of life standing still, and rushing by us at the same time. On a personal note... I'm jealous of this shot.
i straightened and cropped the photo to remove some illumative light out of the top right hand corner and then reduced the noise and ran the smart sharpen tool to remove any motion blur, lens blur, and gaussian blur. i then ran the noiseware pro plugin in the default night scene option to reduce any further noise and that was the final product. realisticly though you do not notice too much difference in the photo by doing this process but i generally go through this procedure with most of my photos these days. other photos can require alot more attention but if you are a good enough photographer you shouldnt need to do so. someimes by going through this process can over sharpen the detail of your photo.
Others who are good at using photoshop work with layers but i am still learning how to use it myself. i find if there is something i want to learn how to do in photoshop i google my question and look for either a youtube video or a forum with the answer.