Interestingly enough I corresponded with the film maker and mentioned how euphoric I would find it to see a similar production focused on early model BMWs (ie. late 70's to late 80's... '02s, E9, E28, E24, E30s) and he replied with an interesting comment that showed his affinity for the old Bavarian kings as well... he wrote that "when he isn't tearing it up in his 993 at Mosport, he's tooling around town in his '91 E30!"
I had no idea that he himself is, or it seems is, a local GTA guy!?
PS - Trev, clear your PM inbox lol.