In this movie, Richard Benjamin plays an extroverted, outspoken professor who hears about the Cuban Missile Crisis (in 1962) and thinks the world is coming to an end. Thinking he has nothing to lose, he embarks on a monumental bender to end all benders. After several days of drinking, wenching, brawling, and bridge-burning, he is found by a cop, sleeping off a drunk in his car. The cop then gives him the worst of all possible news--the crisis is over, there will be no war, and he can go back to work. He then goes home, a broken shell of a man.
While he's talking to the cop, a green car pulls out of a side road behind him, pauses a moment, and then pulls away. It's a 1971 Ford.