@Howard: yes, and one of few historical fictions of any sort that is accurate.
Semi-off topic, but to the Highwaymen not the subject of this thread.. My dad was a boom mic operator for the Highwaymen "In the Studio with the Highwaymen" studio documentary thing. Didn't spot his name in the credits in the credits on the rip on YouTube though.
Cool. I know the group mainly through the title track of the first album that was played a fair bit on the radio during that time, of which the last verse (by Cash) I identified. The theme impressed me, though having seen Nixon and the Man in Black, as well as some Johnny Cash show recently, I can see where his vision led him.