weather balloon maybe?
Thought about it but I doubt it. Unless it was some really forgeted up/really experimental weather balloon, I haven't really found anything resembling it (black w/ that weird 'crumpled' shape) after some google searches. Plus, from what I remember, it never really gained or lost altitude and just kept to a steady path north (unless weather balloons do that, admittedly i dont know a lot about them). Can't say I had my eyes on it for very long outside of a few minutes, so maybe it did crash or float away after flying for a while, can't say for sure.
Might try calling up a friend of mine tomorrow and see if he remembers it at all.
