The cop who was chasing him stops a few seconds after the impact. The gigantic fireball pretty much seals the deal that the dude isn’t gonna make it.
In case you missed it, I think this is the video wazzu was referring to. There is a shorter version of this video that stops right after the white car enters the frame, but this one shows the police Dodge Charger that was just a few cars behind. The officer does jump out to assess the situation, but I dont think there was much he/she could do. Another police car shows up from the other side of the tolls too.
You’re right though, a few cars pass through the EZ-PASS as if nothing had happened. They can’t be inconvenienced by someone dying. Welcome to New Jersey.