Im starting to see a pattern emerging here.
Reportedly he did the same thing to a lawyer in 2009.He cut the lawyer off, the lawyer honked his horn and then JLM blocked him in and got out of his vehicle to ask the lawyer what he was honking about. A standoff ensued and when the lawer pulled out his cell phone and threatened to call the police, JLM took it from and punched him in the face.
Oddly JLM then apologized and drove the man to the hospital.
Full article can be found
here
I see someone with poor impulse control and a bad temper who tries to hide it behind a veil of politeness and friendliness.