An idea

A good, dear friend of mine had an uncomfortable time being lost on the road for several hours.  It reminded me that one of the best things I liked about the "Blair Witch Project," was the section of the film where they just couldn't get out of the woods.  That sort of dark magic is very scary to me.  I was thinking of a film where a bunch of people are in a big monster of a SUV with all the GPS and cell phones and everything.  They are going down the back roads and they are told not go down ol' number 13 cause that's just a bad road.  They scoff.  They drive. 

And drive.

And drive.

Even when they try to go back, they just end up going forward.  GPS doesn't work, nor do the cell phones.  Eventually the car runs out of gas and they have to walk. Someone tries to go off the road and everyone learns that is a bad idea.  Finally, they come to a cross roads and have to decide what road to take...

I like the idea but it definitely needs a third act.