It's a simple matter to make a small incision in the bag's fabric large enough for you to fit a small eyestalk through the opening. Once you've done so you find that you are indeed alone in the bed of a truck. So with equal ease you tear your way out of the way with makeshift talons, shifting into a bird as you do so. Then you spread your wings and fly from the back of the truck, coming about to follow at a safe distance. There's only one man in the truck, luckily for you, a chubby bearded man. From your vantage point you spy the shotgun kept propped up on the passenger side, but you don't plan on letting him use it.
After roughly a half hour of driving, your escort pulls into the parking lot of a closed new age book-store, which is when you move to strike. The man just barely notices the ripped bag by the time you dive for him, already shifting claws to rend him, and a mouth to gobble him up. He sees your movement, and rather than going for the shotgun which is too far away behind an already closed door, he begins to pull a knife. His human reflexes are too slow however, and you've already cut his throat and begun to pull him down your demonic gullet by the time the knife is half-out.
...
The same person again finds a body the following day, at the same place and the same time, with your accompanying note. This time though, he pulls up a chair near your facsimile of a corpse, to smoke and think, before he brings in one of his men. The two of them talk, but the one who found you, a Mastiff lieutenant named Jacky Florentine is clearly giving the orders to the other, who you know nothing about.
"I liked Ray too, but we can't let this get the better of us. We need to play this smart. So how i figure it, either someone is spying on us, with a bug or magic or maybe even on the other side of this fuckin fence. Or they took Ray, and they tortured him before bringin im here. Could also be some sort of fuckin monster, you member that thing the crawlers strung up a couple months ago? The thing that took that ol lady's kids and then stole their voices to lure her out? Could be somethin like that. So, i want you to get your boys and have em cut on poor ol Ray here for a bit just in case. Holy water, silver bullets, i don't give a shit, just have em make sure this really is dead ray and not some zombie fucker lookin ta chew on our faces." He takes a long puff on his cigarette after his agitated diatribe, and then calms down, looking real quiet. "Then hand him over to Rico, guy's an asshole, but if things go south he and his guys will have the guns to take care of it. Have him meet with whoever is fucking with us. Man, wish we could at least keep the guys fucking ashes or somethin. "
Heh. So they're smart enough to try to make sure we really are what we appear to be, but not smart enough to go inside before talking out loud within earshot of what they think might be a monster. I have no issues with letting them put the knife to us for a bit, i highly doubt they will have the means to genuinely hurt us, and a little bit of damaged meat is easily healed or replaced.