Sandy dealt two serious blows to the gasoline and diesel supply system in New York and New Jersey. The storm shut down a large number of the petroleum terminals in the region. Those are the massive storage tanks that hold gasoline so tanker trucks can pick it up and take it to gas stations. Some of these terminals were damaged, while others just lost power. The storm also shut down the major pipeline that brings gasoline from the Gulf Coast. So even when fuel stations get their power back, they will have a hard time getting gasoline they need. Experts say it could be days or weeks before things return to normal.