I am always tinkering with pictures and stuff in Photoshop and I have a collection of desktops I have created and figured I would post up a few of some recent ones I have done from some recent details. Now I have created these for my 22 inch wide screen monitor so they may not look well on every screen if you desire to use one and if you let me know I might be able to re-size them.
You should be able to right click the pictures and save it to your desktop (or click on "set as desktop background" and from there select "stretch") and from there right click it and make it your desktop.
On this one I created a space to the left for icons to be placed.
I have others I will post up soon, several not car related, and if anyone else has some of their own please feel free to post them up also. I switch my desktops often so I have a rather large collection.