This man appears to lack basic manners and humility. That he is so easily upset by what he perceive's as the injustice of having to share space with other road users is possibly a manifestation of his personal insecurities. The small thing's, live and let live, would go a long way towards a more humane world.
In my opinion, this drivers awful attitude was unnecessary and uncalled for.
Film them. Then send the company the link to the video. Trust me, if this is true then they certainly would not like the image their employees (or managing directors even), portray. And you have every right to do this.
Let it go