First I will direct your attention to the injuries on the man. It is impossible to say whether the man has his right arm from this angle but it is clear he does not have his left arm. You can see he has a fracture in his left leg and scrapes on both knees and his face. The scrapes and the injuries to the left side of his body indicate he landed face down impacting his left side first. Instead he lies on his back with the motorcycle on its right side, the body was clearly moved. To further support this theory notice that there is no pooling of blood near the left arm. It is important to point out that based upon the lack of skid marks behind the wheels of the car the car did not break abruptly. As well I must point out that the skid marks that are present do not end at the bikes tire and therefore were most likely present before this incident. This leads me to think that the car and bike were not in any accident. At this point you must be thinking who would set up a scene like this, a motorcycle on its side, a dead person, a missing left arm, another arm in the grill of a car. It is natural to think that the aliens had something to do with it, but they are not the only ones there. Someone must be behind the camera taking this picture. I doubt that the photographer is completely innocent in this ordeal otherwise he would have come forward publicly, he has not done this. It has been mentioned by others that the bushes are in the road, this suggests the aliens are moving closer, and they are clearly coming out of hiding. They could simply want to help the man, not realizing he is already dead, or they may wish to eat him. The aliens were set up for this photo, lured by an odd site, and photographed by the perpetrator himself. The only way to find the responsible party is to trace the photograph back to the photographer, a good place to start is previous occupants of the hotel room where it was found. It also may be helpful to review missing persons reports or autopsies in order to identify the victim. It is possible that the car or even the bike belong to the perpetrator and if they are identified they can be traced back. I wish you luck in your quest to find justice.