Dealey Plaza: there were SIX people in that car, not four. Stood there and count

Did the grim tourist thing at Dealey Plaza in Dallas, the grassy knoll, the X painted on Elm Street where the shot hit. Heavy place. And standing there I realised my whole mental picture of the JFK limo is wrong. In my head it's a roomy car, Jack and Jackie in the back, driver up front, maybe a cou……