"no one really knows whether the Southeast Texas coast could be quickly and safely evacuated in the event of a Category 4 or Category 5 hurricane. . . In only one area are the experts in agreement. . . State and local officials have little confidence in their ability to evacuate those without cars, living in group homes or many of the sick and elderly living alone. Plans are in the works, they say, but for now those who are most vulnerable are living on the edge of disaster."