My problem with the video is that people watching it who don't know any better might think "well if those stupid b****ard lorry drivers would adjust their mirrors correctly, they might be able to see better", or "why is the meat-head lorry driver steering towards those cyclists anyway, surely he must have seen them on approach to the junction ...... because of course cyclists would NEVER cycle up the inside of a left turning lorry ...... would they?"
Granted, the video might serve it's purpose but in the process it doesn't portray a very good image of lorry drivers, and paints lorries as much more dangerous machines than they actually are.