The thing that gets me is the Nissan's conscious effort to cause a crash.
0:14 he begins to slow into the corner.
2 seconds later he indicates out into the bus stop and then slams the breaks in. Blatantly trying to misdirect the cam-car into reacting late and rear-ending them.
Whatever the motivation, its bloody moronic driving. If they are that mentally unstable that a car behind them makes them do this then they shouldn't be allowed on the roads.
What awful people, hopefully a fine arrives for them soon so they park their ugly BMW elsewhere.