I see only two scenarios. Distracted and horrible driving or an intentional buzz. If it was a buzz, he miscalculated and it hurt you. What he did not count on is video evidence. Trust me, you are still in the glad to be alive, it could have been worse phase. You have plenty of painful and restless nights and some mental and physical healing to do. It may be hard to get back on the road when you are feeling better. Your life is different now because of this.

Driver should be charged with failure to maintain his lane and distracted driving. If deemed to be intentional, the charges should be a long list. I would get an attorney and be patient and wait to see how it plays out.

Good luck and heal up!