Trailer looks awesome. In fact, I just finished reading the book today. BTW, I totally recommed the book, it is really fucking awesome!
As to the Washington monument, isn't there an epilogue to the book set in the 1960s? That could explain things.
Indeed, and maybe it's just me, but the clip of the Washington Monument in the trailer looks like it's supposed to be modern day.
Er, modern day definately isn't accurate. Can "contemporary" be applied to fifty years ago? Ah, screw it, it doesn't look like it's from the 19th century.