in protest of high fuel prices. The article says "gas", but I'm sure they're protesting mostly diesel. I didn't see any buildup for this event. Hard to imagine this was spur of the moment, though. Although I surely sympathize with their plight I don't see how such a stunt will in any way help them. http://www.nbc6.net/news/4832833/detail.html
I agree, what do they think this will do, increase supply or something? I imagine it's a symbolic move...
It will have the same effect as a NYC taxi driver honking his horn at the unattended truck blocking the roadway.