I'm a bit unclear what is so negative about this. While there is an argument that a leader should be able to handle criticism without losing his/her temper, he appears to respond to the driver as an equal with whom he profoundly disagrees. He didn't write the man off or act as though he wasn't worth his time, he simply responded in a frustrated manner to an interaction that he clearly was not in the mood for.
Does being brusque require a public apology?