I had never heard of this car. I think that would have changed Indy had it raced. One of the reasons I never heard of it I found in one of the posts @ Youtube:
Howard Keck who owned the car Vukovich drove in1952, 53 and 54 was so sad at Vukovich's death in the Indy 1955 race, that he quit racing. Because Keck quit racing, this car was never raced.
In 1952 Keck brought the first roadster type car to Indy. In the Indy roadster, the engine was offset to the left of the driver. In 1952, Vukovich had a big lead in the race, but a small part broke only 8 laps from the finish.