Factual error: 2011 Model Jeeps weren't around in the 1960's.
Trivia: In the Pentagon, when Kennedy is walking up to Mason, Mason has a brief hallucination, and the TV screens in the background change to blink-and-you-miss-it moments during and after the IRL Kennedy assassination. Footage of Kennedy addressing the crowd, getting into his convertible Lincoln Continental, his mourning wife Jackie in her funeral garb, and Kennedy's coffin draped with the American flag, as well as a mugshot of Lee Harvey Oswald.
