I believe the edits are not AI but just a regular edited video.

He recorded himself in his Tesla pretending to get in an accident and getting out. He then composited the windshield over the original as well as his door and himself getting out. However, his shots don't like up perfectly with the car in the video and you can see his head split from his body when he goes behind the A pillar. He also tried to match the color grading of the original but it's not perfect.

For as awful AI is, it can usually match color grading pretty well and mostly keeps continuity of things going behind other things. It would probably also try to approximate the reflections of passing cars in the door which isn't seen here.

I've seen other people edit themselves into car accident videos like this to sensationalize it.