He had to make sure it went down. There were 6 or 7 different shooters, the most notable was Woody Harrelsons father. The assassin that got him was in the sewer drain adjacent to the car, unnoticed, he shot from the front ride side of the car. The scapegoat was planned and attention was drawn away from the area around the vehicle. A great documentary about this is called "From JFK to 911" A richmans hat trick, something like that LOL it's on youtube.