MSPR Comic Shot Part 1

I know the game is old (over one year), but I am still fascinated of it. Now I think I should make a wallpaper series with one certain car on a certain track - and each vehicle type should be presented.

Unfortunately the shots are in 1280x720 Resolution, but I need them in 1600x900. Furthermore the shots aren't as smooth as in real life. Therefore I have Resized the image, Sharepened the pictures, then added a selective Blur and then I set an unsharp mask. The result is a picture with a comic like impression and the unsmooth edges look better.

If you have any suggestions to make the pictures looking better, please tell me!