I agree with the duck though. The body of the more lean bottom horse with the fuller head of the top horse would make a good design. Although, I feel as though the body on both could be made flatter, and less dog like. Also, a bit shorter length-wise, and make sure to make it large enough to look like were riding an actual robo-horse and not a merry-go-round one. Anyways, keep up the great work!
Also, I just noticed the native American in the background of the graphic, looking onward past the horses and naked man.