IDK how many people outside of the transportation industry know about this. I certainly didn't know it until I became a truck driver. Aside from dealing with reckless four-wheelers and outlaw truckers, I learned about the other factors that can have an impact on our economy.
Also, if you think about it, the rise in the price of oil affects the global economy in each respective country. If anyone thinks we have it bad over here, try Europe. Granted, the article is a bit dated, but I think it's still relevant.