If National Guard trucks can get them to the Super Dome, could they also get them out of town (and set up a refugee camp), or are the roads so bad that they can't manage the trucks?
Seems moving them to the Super Dome and then having to move them again later is double work, but if the roads are too bad to leave on, then I can see the point.
It's a staging/logistics move, I think. Moving them to the Super Dome means you only have to open one route out of the city. Same principle as FedEx.
Plus which, you know you've got dry places to put thousands of people, even if it is horrific in there.
I imagine the NG are trying to centralize the refugees to make it easier to get aid to them, and easier to start moving them out once they have either enough clear roads or enough helicopter transport capacity.
I don't think there are any roads going OUT of town that the trucks could use....unless I missed a report.
I got the impression that the highways out of NO are impassable...