Here's where I found the car: <<< link removed >>>
"Eventually, another strange bird at the start is the Platypus Oldsmobile, a car which was owned by the late Ken Miles and was used by racers on a rental basis. Originally the car used a Merlyn Mark VIII chassis and a strange body. In 1966, shortly before his deathat the wheel of a works Ford[Miles] decided to replace the original body by that of a Lotus 19. Spectators confused that car, driven by Miles Gupton, with the famous Lotus 19G Ford V8, well known since it's entry in competetion in 1964. At 2 occasions the enlarged Lotus 19G will be seen during the rounds of the 1967 CAN AM. However, in both cases, the Lotus 19G failed to survive the qualifications."
So, Karn gets the point.
Dan