I remember seeing the race on ESPN as a re-run several years ago. ESPN may be a source for the film. The TR6 was all over the track because it had some tires that were not best suited for the track as conditions were changing (weather and track) and the team had to guess which tires would be right. I think if you win, you had the right tire! That event may have been the race where Triumph set the division (that TR6's ran in) lap record for many years.
I also witness a mighty Jaguar (I think it was from Grand Turismo out of Michigan?) cause the Dotson crowd/team (FACTORY SPONSORED BIG, BIG MONEY) to protest the use of the Jag 12 cylinder brakes on the XKE 6 cylinder. The Dotson crowd was over ruled and the Jag was able to run as it had in other IMSA events around the country. The Dotson crowd was in a tizzy as they were really concerned that a quality race prep had been done to a Jag as it was being done, but with out concern for cost, to the Dotson’s. It was my feeling, and still is, that the Dotson team was so united in their defeated spirit of the decision that they actually planned an event that would take the JAG OUT! It appeared that a sacrificial driver volunteered to do the deed. The dirty deed was a Dotson running along side of the Jag on a straight stretch of the track and suddenly, with out mechanical failure of other hazard, turned sharply, ramming the Jag about the door edge. The Dotson was retired and in spite of the ramming the Jag took the lead and advanced so far in the lead that second and third place was filmed more than the lead on the ESPN film of that race (Paul was in second place and the first place driver had no name recognition probably had a lot to do with the camera’s focus). P. Newman was the lead Dotson driver in that race and drove flawlessly as he was capable of doing, but the superior car was just too much for all of the Dotson sponsorship and the Atlanta Dotson crowd that planned the dirty dead. By the way, I don’t think P Newman would have tolerated any dirty deeds on the track, it was solely a local thing. The dirty dead is just opinion, but was shared by any Jag fans.
Im not sure but I think both the TR6 and the Jag had these victories in 1980 at ROAD ATLANTA, a race track about 35 miles north of Atlanta.