I haven't used stories in this way -- the only thing I can think of like that is when doing political copywriting, and I have "magnified" or highlighted the furthest extent possible of potential outcomes of particular policies (while still having proof to draw on of the claims).
I agree with Eric -- and "future pacing" what might happen if you do/do not undertake the course of action you want the reader to take would be fine in a story.
Still, your specific story... reminds me of a very hot summer night about 10 years ago when I woke up to see and feel a huntsman spider crawling across the top of my chest... boy did I get out of bed fast!
Rachel -- now I'm curious!
