You're right about the driver. I know a fella who drives a Kangoo van and he can get that into places where I've seen landys and a Fourtrack get stuck. It's all about reading your route. If I'm completely honest the bloke who got the G stuck kept falling into the tractor ruts through bad planning.
I've never seen a mog get stuck but I can only guess that it would be a struggle to free up when it does?!