Something ( Plant? ) That could take Solar Energy within the desert and turn into a Liquid Fuel ( Diesel ? ), that could be refined ( using the electricity from the Desert ) into usable fuel in today's Diesel or Patrol Engine, without emitting any ( or most ) of the harmful substance that we current do.

That would be the best of best Fuel type, require no change of Engine in Planes and Cars. But still as clean.

Of Coz i am only dreaming of one.