N4281U

The pilot reported that he held a rating in only helicopter and he was receiving instruction to add an airplane single engine land rating to his private pilot certificate. He was on a solo cross country flight and had been inflight for about three hours when he became disoriented and was unable to find an airport. Because of his low fuel situation the pilot elected to make a precautionary off field landing to an unpaved road. After touchdown, directional control was lost and the airplane impacted an embankment on the side of the road resulting in substantial damage to the fuselage and both wings. The pilot reported no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.