Have to agree that it's disgusting and expect him to get the sack however I have mixed thoughts. I would imagine most of us have reacted poorly in certain situations and instantly regretted it (I know I have). Listening to an interview with him today you could hear that he was almost in tears and I felt a little bit of sympathy for him. Won't be a good time for him and his family.
One of the most gross acts you can do and to do it, while being goaded and filmed and to do so with a child in the other car was pathetic and stupidity of the highest order. I am sure he deeply regrets the split second actions and is sorry but you have to live with the consequences of your actions and I'm afraid to say he deserves everything he gets from an employer/employee stand point