I have seen a kind of image that shows the red, green, blue dots on the game viewer. It looks like those dots and lines were indicated where the vehicles could go. It seems useful for modding, I was wondering what tool is that and where can I find it?
Also, I think the current model editor is good for the vehicles but not others. I really like to know is there any simulator out there to easily test the mod without restarting the game over and over?