I have huge doubts about this film. Who is the screen writer? What source material has he consulted?
Since LeMans location filming wasn't mentioned, I presume this film time frame will be lead up preparation to LeMans. Will the cars be real or CGI?
Also, the comment, "....elevation of Miles' real life role. . . but not necessarily working on the big picture." concerns me. What was Miles' role at SA, besides the obvious. Was he Shelby's muse? Miles had won Daytona and Sebring and knew he could be looking at a racing triple crown. Did it go to his head? What was Shelby's attitude toward Miles? In other words, will the dramatic conflict be accurate as to what it was like or will it be contrived? Think Gas Monkey Garage with staff personality quirks and how they manage to over come huge problems and get race cars ready just in the nick of time.
For me, the jury will be out for some time.