I was recently involved in a strange situation in California.
At an intersection near my workplace, an individual broke several laws in rapid succession. He first drove forward through a dedicated turn lane going at least twenty miles an hour over the thirty-five mile an hour speed limit. He then attempted to change lanes in the middle of the intersection in front of the car ahead of me, but was unsuccessful. At this point, he swerved directly in front of me and braked, causing both myself and the car behind me to slam on our brakes to avoid a collision. Following this, he turned into the parking lot shared by my firm and several others. I parked my car, wrote down his license plate number, and went into the building.
I was severely shaken by the incident as it was the closest I had ever come to being in a collision. Perhaps this is what led to my subsequent lapse in judgment. Over the course of ten minutes, I decided that it would be a good idea to confront the other driver. He had parked in front of a retail location, so I assumed he would be leaving shortly. I went back outside and sat down in my car. Within a few minutes, he exited the store and began pulling out of his parking spot. I did the same, but I stopped my car in a position that prevented him from leaving in one of the two available directions. He chose to go in my direction, at which point I motioned for him to come over. He either didn't notice or didn't care and spent the next thirty seconds edging right up to my car. Finally he jumped out and began yelling for me to move. I tried to ask him what he was doing earlier, but he began to get more agitated. I told him that if he wanted to leave, all he had to do was turn around and go out the other direction. At this point, he wedged himself in my partially-open window and attempted to open my locked door from the inside while periodically taking swings at me. We struggled for about a minute until I realized that he wasn’t going to yield, so I told him I would let him pass. I moved out of the way, and he sped through and out of the parking lot.
I’m not sure what if anything I should do at this point. My window is covered with his fingerprints both on the inside and outside, and I have his license plate number. Conversely, he is aware of the location where I park my car. I’m not interested in pressing charges as he caused no harm to me or my property, but he is obviously a reckless driver who shouldn’t have a license. Unfortunately, none of the other cars involved ended up pulling into the lot, so there are no other witnesses. I’m also not certain if I have done anything illegal here. I should note that the parking lot where this occurred is private property that belongs partially to the firm where I am employed.
I would be grateful for any advice on this situation.

