Wrong and wrong and wrong.
The grassy knoll isn’t in front of the limo.
The grassy knoll is where Zapruder was standing and the spray flies toward the front from the rear shot.
The impact of the bullet drove Kennedy’s head 2.3 inches toward the front. Only later did he react to the shot and move toward the rear.
The bullet fragments cracked the windshield and dented the windshield frame. Both pieces were found near the driver.
But then again, you were watching Oliver Stone’s movie and not the Zapruder film.
What were you watching? Zapruder was near the Grassy Knoll, but not on it. If you are talking about the “spray” of the material from inside JFK’s head, it DOES NOT fly forward. It flies toward the left rear of the limo.....away from the Grassy Knoll. In fact, the motorcycle cop (Hargis?) riding behind that left rear corner of the limo was “sprayed” with blood and brain matter. He and his bike were covered......