Holy Simultaneously Grim and Necro, Batman.
That aside, a certain shot caught my eye:
That’s actual Katrina footage, dirtied up a bit to fit the über-post-apocalyptic setting of The Road. You can see the New Orleans skyline in the background, and that clump of boats behind the two larger ones are boats my company insures. I’m not exactly sure just where in Plaquemines Parish that picture was taken, but it’s definitely here. I’m inclined to think it’s the south side of the Gen DeGaulle bridge, but I’m not sure.
These boats, the Sea Wolf and the Sea Falcon, are part of the Menhaden fleet and I found a number of pictures of them on the NOAA’s National Weather Service (NWS) Collection Catalog of Images. Here’s a shot of them, from a slightly different angle: