LAGOS, Nigeria Long queues of vehicles continued in many Nigerian cities on Thursday as a week-long petrol scarcity worsened in one of the world's largest oil-producing countries. Many Nigerians reported waiting at fuel stations since early morning but were unable to obtain fuel until the afternoon. Alaba Oluwole, a cab driver in Lagos, Nigeria's commercial hub, said that he spent six hours at a fuel station on Thursday without being able to purchase fuel. "I haven't worked for two days and