Utah oil sands may be next to be exploited to meet the highest US demand for diesel and gasoline in the last decade (now up at a level of 4.2 million barrels per day). Petroteq claims to have a new, non-polluting method of separating oil from the sand.  Adding to the demand for diesel, new pollution restrictions are pushing big ships away from high-sulfur bunker fuel and into low-sulfur diesel.  Some ships are also being built to burn CNG – compressed natural gas – but availability, cost, and the fact that the tanks take up twice the space of liquid fuel means that it may be quite a while before there is widespread adoption.