I see some color noise that you should be able to get rid of pretty easily in the detail tab. Whenever you push a file to a higher exposure, remember that you will introduce more noise into the image and you may have to compensate for that. I dont mind the shift the the bluer tone, it adds more of a mood, as an off white balance often does. That said, you went slightly too far I think, and id pull it back a little bit. It looks like the highlights on the car are being blown out, which is fairly unattractive in this particular case. You can try and use the recovery slider under the basic tab to bring back some lost detail. You can also use the tone curve to reduce unwanted highlights.
I see crude on the tire, which you can remove with the spot removal tool. Same with whats on the ground by the tire. Remember there are 2 modes with the spot tool, healing and clone. Switch between them and use what ever works best. When ever i work with the spot removal tool I make sure is display mode is set on auto(from the default always). You can check to make sure in the tool bar under the photo, if that tool bar isnt there press T and it will show up. When its on auto you can move your cursor out of the image area and get a quick idea of what everything looks like without the spot overlays. Good for checking for seams.