The June 24, 1944, issue of the Detroit Tribune shared the below caption and photo. I do with the picture is better. I was unable to discover any more about George Carr or the Jeep. Because the text is hard to read, I’ve transcribed it below.

YES, YOU’RE WRONG AGAIN!–But you’re correct when you say it’s a Jeep. The model of the famous 1/4 ton Army vehicle Brough two first prizes to Private George Carr, of Des Moines, Iowa, Negro member of a Quartermaster Trucking Company of the 13th Army Air Force at an “Ingenuity Contest” sponsored by the American Red Cross in New Caledonia, South Pacific. About one-twentieth the size of a real Jeep, this model has a hood that raises and latches, real springs, transmission, and rear differential, a windshield which may be raised and lowered, and a steering gear that actually moves the front wheels. (U.S. Army Signal Corps Photo.)