This video from the Portland Water Bureau illustrates some of the blind-spot issues that truck/bus drivers face with not just cyclists but all vehicles. Yes - the sound is less than Dolby Surround Sound and it's a little stilted, but the content is good, people. I especially like this video (which is from the link I embedded in today's earlier post) because it features in-the-cab video of what a driver is seeing.
It would be worth reviewing this video prior to coming to "Behind the Big Wheels" and especially worth watching closely if you can't make this event.
I never want to sell fear, but the last three cycling fatalities we have had here in the Twin Cities are due to this kind of accident, so in my mind we can't do too much right now to educate rider on blind spots.