Hey
Well i found this out a while ago and i wanted to share to you guys.
First open up forge and select the level Sandtrap
Then turn in to edit mode and go to the driver's spot on the elephant and spawn a tank and use the tank to push the elephant around ( Fly Around With the Tank in side the Elephant )
When you finaly get it upside down you can de-spawn the tank and jump on the elephant. You will notice this " Press ** to flip over......what who. How did you do that "
And if you do click the button you will fly around or just jump up and fall back down.
And Yea im not sure if any one else found out on this.
bye