You follow the truck from afar for a short distance until the driver pulls to the curb in a small residential area. You fly down as the driver steps out and gives a conspicuous look around. "Excuse me citizen," you proclaim from above, "but I fear you have become a cog in a nefarious mechanism."
"Oh, shit," the driver says.
"Yes, but fear not," you start to say. Before you can get the next word out, he's pressed a button in his palm and the contents of his truck have exploded. It's not a small explosion by any means, even by nuclear standards. It's one of hundreds going off around the world simultaneously. Of course, you don't know that; there's not even a shadow of you left.