I've been following this since I was a little kid. President Kennedy's detail drove by our house when I assume he was going to WPAB. Anyway, I don't believe you are watching the latest enhancements. It now appears the driver slowed and turned to check if President Kennedy was still alive. He was so the driver then had to come to a stop at a certain mark so the final killer could take the head shot. In the film there are one or two frames missing right at that moment.
I've been following this since I was a little kid. President Kennedy's detail drove by our house when I assume he was going to WPAB. Anyway, I don't believe you are watching the latest enhancements. It now appears the driver slowed and turned to check if President Kennedy was still alive. He was so the driver then had to come to a stop at a certain mark so the final killer could take the head shot. In the film there are one or two frames missing right at that moment.