[1] The overall shape, a flattened half-cylinder rounded at the front and tapered at the end, has been described as a "pill"[1] or "breadloaf".
[2] The passenger cabin was blended into the body, and there were no fenders, hood, cowl, or running boards.
[1] The bodies were made by Heil Trailer[3] in Fort Payne, Alabama (museum there with references and photos from the build shop that produced them) and the chassis by Diamond T. The first model was publicly displayed in January 1933.
[4] The Texaco Doodlebug probably[4] featured a rear-mounted Hercules L-head [2] six-cylinder engine.
[1][2][4] The Doodlebugs were part of an overall project by Texaco, contracted to industrial designers Norman Bel Geddes and Walter Dorwin Teague, to modernize their brand look.