The distances in the photo are compressed. Post 142 explains the location of the car when he stabbed the brakes. It is well before the crowd.
Watch the crowd scatter as he approaches without touching the brakes.
https://www.youtube.com/watch?v=HiRWs-YgPwk
Did you miss the question at #150 Ray?
Why would a terrorist who wanted maximum damage on the target have his foot on the brake?