Photographic evidence demonstrates that multiple Camaros were used in official capacities during the Players 200 Sports Car Club of America Canadian American Challenge Cup (Can Am) event held at Mosport Park in Bowmanville, Ontario, Canada on Saturday, September 23, 1967. This was the third event in the championship and Denny Hulme won for the third time in a row in his Chevrolet powered McLaren M6A.
This first picture shows a bright red Camaro RS/SS convertible with a white D91 nose stripe, white interior and yellow flags mounted to the rear bumper sitting at the entrance to pit lane. While it is hard to confirm, this Camaro is most likely a 1968 model because they were introduced to the public a little more than a week before on Friday, September 15, 1967. The photo was taken during the third of four support races held before the main Can Am event. It was a 15 lap race that featured Group 7 cars with engines under 2.0 liters. According to the program of events, it took place at 1:00 pm. This Camaro was probably used as the pace car for this support event as well as the other three support races.
I found it at the Remembering Mosport Facebook page:
https://www.facebook.com/groups/mosport/media