These are blowups of the first (well second including the first that is empty) image:
[atsimg]http://files.abovetopsecret.com/files/c9dd1f8da87785e2.jpg[/atsimg]
[atsimg]http://files.abovetopsecret.com/files/bdef5e40dbb4084b.jpg[/atsimg]
[atsimg]http://files.abovetopsecret.com/files/a4e02dfa4fe5cd81.jpg[/atsimg]
There is not much to judge on....
Object seems too distant and looking back at the original photo i go back to the assumption it is a bird?
I cant see a cloud moving that quick.
But it only seems to move that quick.
Who knows, how did you take photo's that quick?
If you did is there like 100 photo's?
We need to see them all.
It depends how long it took to pass.
A cloud doesn't move at 5000mph.
save the pictures on a folder on your pc
go to preview mode and slide through them
you will see the cars in the backgrounds on street level travelling along with the object (bird in my opinion)
you will notice that this is taking place over a significant amount of time
(cars travel in a cue except for the first one and i do not think they are racing-60km/hour at best)