1) Enter an AFV in the gunner or commander seat (Nyx AWC)
2) Have an AI or player drive the AFV
3) Leave the primary sight (interior enabled)3) Enable free-look (Altx2), have the driver turn the AFV or enable free-look (Altx2)go over rough terrain.
The turret and cannon will continue facing the same bearing regardless of where the hull is facing.
Videos to follow