London's Drive to Work Day

I'm confused; is this what cyclists or motorists do?

"Getting into the spirit, cyclist Dave Rabin said that he is "going to drive really aggressively, do u-turns wherever I like, pull in without indicating, drive with a 1/2 inch gap in front, cut in to queues right before a red light, and overtake without bothering to pull out at all... see how those taxi and van drivers like it"