I ran the Savage Worlds ETU Scavenger Hunt for FG Con 13, and I had a very interesting experience.
It was really strange. I have run this game before quite a couple of times and I change it a bit every time, but it was almost as if my players got my notes. They already knew pretty much the perfect solution to every problem I threw at them. This one-shot takes around 2-3 hours, and they did it in a little over 1 hour.