3/4 (TQ) midgets at the Petersen
The Richard Varner Gallery of the Petersen Automotive Museum has a current exhibition through 2018 entitled "Harley vs. Indian." The author really isn't a motorcycle guy, but the exhibit featured a pair of early 3/4 (TQ) midgets, powered by (as you might have guessed) Harley Davidson and Indian engines. The Harley powered car was emblazoned "Half a Harley" so its safe to assume that the Indian TQ midget was also a single-cylinder power plant adapted from a motorcycle.
Click to enlarge these photos of the Harley TQ
Click to enlarge these photos of the Indian TQ
The author took these photographs and welcomes more information on either or both of these cars at firstname.lastname@example.org