Something similar happened to me back in June. A car ahead of me pulled over and a little girl jumped out and started running. The driver got out and tackled her like he would in a football game, got on top of her and punched her. I screeched over onto the shoulder and started backing up into oncoming traffic to go help. Some big ol redneck across the road witnessed it from his front porch, and was making his way over on foot to come help too. The pissant who hits women saw us converging on him, jumped back into his ride and redlined it to about 100yds away, then yelled for the girl to get back in the car as "he had the fucking baby" The girl, bleeding from the mouth, ran over yelling to me not to do anything. It's not her dad, it's her husband! She was like 5'1", looked like she was 12!
Asshole sees me and the redneck make it back to our rides to begin pursuit, smokes his tires peeling out and heading into town on the same road. Ended up forcing 4 or 5 cars and trucks off the road, and almost caused a fully loaded logging truck to collide with a van full of people. Cops caught him minutes later, and he was arrested. She of course, was an uncooperative witness and it went no where. I believe that ass had to pay 2 small fines and that was it. Unbelievable. Can't imagine what kind of douche you have to be to punch a tiny woman like that, or drive like a maniac with an infant on board.