Stalled Productivity?

I just saw something funny on CFTO local news. They were talking about that huge crash on the 401 today. At the end of the news story, this funny graphic was shown. They said that it was estimated that the delays caused by today's accident resulted in $280 Million in lost productivity. What the heck does that mean? They have nothing to compare that too. They didn't state of their assumptions or reasons for choosing certain parameters to come up with that calculation. That is just such a random number...purely for shock value. One of those "Oh my god, that accident cause a loss of $280 Million??? Wow, that is crazy!" It's not yet certain if there was driver fatigue that caused the driver of the truck with garbage to swerve and eventually hit the truck with the paint. It is amazing to see how dependent this city is on the 401 though. Check out all the people that were negatively affected by the accident today...