Image I made for an ad.
I bought the photo at istockphoto and removed a couple of cars in Adobe Photoshop.
Then I rendered a simple spaceship 3D-model from Autodesk Maya and added a little bit of dirt and rust in Adobe Photoshop.
Finally I comped the spaceship onto the photo and did some tweaks/grading to increase the sense of realism.
Photoshop / 3D