As you can see, quite a bit changed. The camera boom was removed and the trees in the background were replaced with a stock shot of a freeway interchange. The piles of snow were added and the texture of the snow was enhanced. Overall, the color of the shot was blued to appear colder, blue was also added to the roadway to mimic the look of ice covered snow and the color of the truck was punched up to stand out against the background. Finally, snow was added at various sizes to give the appearance of depth to the image.