For the record: think of this concept art as a Mock-Up of a new product. First, you start with brain storming and singling out one particular idea to run with which is directly analogous to the exact same process when making a game. Then, in the initial mock-up of this new product, it won't be made from the materials the final product will be made from, you may make it out of toilet paper rolls and toothpicks and mousetraps and pipe cleaners and Popsicle sticks and all this other stuff, but the idea you're tryin to convey is recognized, even if the materials used to convey that work aren't wholly your own and the concept isn't complete. Because remember, this wasn't meant to be seen by the public, just passed around the studio to give people ideas, and in a day and age when we can just google an image of the earth and overlay an image of The Travler and get the concept to the other parts of the studio quicker, why not take advantage of it? ©