It's very likely that it's fake. It's very difficult to survive in the desert for twelve days, even if you have adequate water, let alone survive and find the energy to build a motorcycle, as rudimentary as this one might be.

Finally, in a few of the pictures the supposed engineer of this contraption is shown in a thong. I don't know about you, but if I were in an arid place the last thing I would want is my skin exposed to sun and the air.

It may be a real motorcycle, and that's cool, but it's very unlikely it was built under the conditions discussed in this article.