That's amazing man! If you're not a graphics artist for a videogame developer or something, why the heck not!? You seriously have some of the most realistic scenes!
Well, for the road I went outside with my sony cybershot and took a picture of the road in my neighborhood. I laid out two 3 foot sticks at a 90 degree angle. Basically, I did that so I knew how big that piece of road was. I photoshoped it so that you couldn't see the tiling (repeating pattern). I knew my road as 36' wide and 56' long. So I made a image that was 3600x5600 in photoshop. I made another image that was 300x300 and that was my road image. I saved it as a pattern and then used the pain bucket to paint it as a pattern onto my large image. I then painted the white and yellow lines and distressed them. I went into 3ds max and uvw mapped the road and applied my image. Don't forget to sharpen in photoshop and turn off filtering when loading the image into 3ds max.
For the concrete, I went to a parking garage and took a picture of concrete. Size of 3'x3'. Photoshoped it also so it wouldn't tile badly. I then used a program called "Crazy Bump" (did this for the road also) to make my normal maps and so forth. Uvw mapped all my concrete surfaces to a tune of 3 feet by 3 feet by 3 feet (I had the uvw map set to box).
For the doors. I simply made a blue image and distressed it in photoshop.
For the yellow bars, I took a picture of rusty metal in my garage. Opened it in photoshop and put a layer over it and painted it yellow. I then applied a mask and put scratches in it.
The pipes are the same material as the doors.
I used the daylight system and then the MRLight portal for the openeings.
I created a back drop and used the map per pixel mat to place my mountain background.