re: Asphalt
In the first half of 2008, when oil prices were spiking, there were numerous news reports in the U.S. of asphalt purchase orders for repaving projects that went unfulfilled. They just couldn't get it, in part because refiners were cracking every last molecule they could into liquids. As the supply and demand gets tighter in the coming years, I do expect asphalt shortages to show up again.