I love the colour and texture of the sand and the road and a great idea. However, you see at the top left hand corner where the road bends off? I would have like to see more on the left side of it as disappearing roads are always great in an image. At the same time, it would mean less of the shadowy and distracting area on the right which came help move the concentration more to the rider and bike.
personal view and personal understanding of the challenge word play into my liking the shot but finding the landscape fascinating, not desolate
also, I think of desolation as static and unmoving-this guy is on his way