Based on ephils review of the FarCry demo, I started reading up on it. I found a few really cool nuggets. There are two more vehicles locked in the single player demo and someone has created a mod to access the Humvee and Hanglider.
There are a few other mods that give you access to more of the island and the best one of all, adds a quicksave function using f5 and a quickload key of f6. This is my biggest complaint for this incredible game and I am glad to see there is a work around. Having to find checkpoints to save a game like this is very frustrating. Lets hope this same mod will work in the final version.
Every single one of these mods can be found at FarCry Arena.