AKWeav and I decided to try taking panzers to an enemy field. All was going well as we rolled down the hill toward A5 from A75, until we reached the bottom of the hill. My panzer went from rolling along merrily in 6th gear to a complete stop. No deceleration, just a sudden halt. Then, with Weav sitting less than 100 yards away, my panzer sank into the ground. The engine started to whine at an extremely high pitch, like it does when you down a really steep hill. In this case, my panzer thought it was going straight down. It appeared that I was moving slowly forward underground. Even after killing the engine, I could not make it stop. I eventually had to Alt-F4 to get out of it.