The Alien Hitch Hiker From Another World 1972

It was August 28, 1972  Buenos Aires, Argentina
3:00 a.m. Eduardo Fernando de Deugd [or Dedeu] is driving from Médanos to Bahía Blanca, Buenos Aires, Argentina, when someone waves him down to ask for a ride. He asks if the hitchhiker is going to Bahía Balance, but the man’s reply is unintelligible. 

The Alien humaniod wearing a coat with a turned-up collar and a large round cap. He has a jaw so elongated that it comes down almost to his chest. Further efforts to communicate prove futile. As de Deugd nears the city, his car lights go off suddenly. Ahead of him is a huge object with a blue light in the middle and two smaller white lights on the sides.

As he steps out of the car, a flash of light strikes him and he feels heat, so he ducks behind his open door. The UFO is moving to the left and the stranger is gone. The passenger door is open and the handle is broken and lying on the floor. The UFO vanishes. 

Sources: Jeff Knox F.B.
"Yo Viajé con un Ser de Otro Planeta," Gente N° 372 (September 7, 1972): 100-103;
Jane Thomas, “The Hitch-hiker from Space,” Flying Saucer Review 18, no. 6 (Nov./Dec. 1972): 23–24;
“Further Details about the ‘Hitch-hiker’ from Space,” Flying Saucer Review Case Histories, no. 14 (April 1973): iii;
Jerome Clark, The UFO Encyclopedia, 3rd Ed., pp. 281–282;
Jerome Clark, The UFO Encyclopedia, 4th Ed., pp. 321–322