I watched this bizarre video a couple of times and couldn't figure out what's going on. I think Folderpirate on Reddit has the best theory:
The guy on the bike was in on it. It was a carjacking/kidnapping targeting the first car.
- Guy on bike stops traffic by trying to cross in front of mark.
- Mark stops. Argument ensues as cyclist smacks car/yells/is obnoxious/wont move out of way.
- Mark gets out of car while it's running.
- Two kidnapper cars come up, grab the mark and his passenger, and steal their car.
Also, the guy filming is in on it as well. He's filming this to mail it to whomever they are going to try and get money from.
There seems to be a bit more going on. Are the guys in white caps bodyguards? The car that stopped for the bike looks expensive, so maybe it belongs to an oligarch's kid who has two white-capped face-pushing goons to clear the way for him? Whatever happened, it was well planned and smoothly executed, like a scene from a thriller.