So I was watching I Am Legend with Will Smith. And in the first segment where he's driving his car he's passing through (what looks like) NYC. He's passing all these billboards that no one is paying any attention to at first, but as he speeds through the city there is a giant billboard with the Superman sign over lapping the Batman sign. Underneath it is a date and it looks like 5/15/? The year is unreadable due to the apocalyptic look of the city.
Is this a coincidence?