Man, you guys really have no faith in your wives do you? Take them out and show them how to drive a 4x4. When my wife got her first Range Rover classic, my buddy jumped in with her, I jumped in his Disco with his wife, sometimes better, in my case anyway, they don't learn from you, and we taught them all about off-roading. On my wife's first trip, she came through an off camber section a bit too low and clipped her rear quarter panel on a tree. I showed her the damage when we got off the trail. She smiled and said, "my first war wound" and wore it like a badge of honour. Later she had a Ford F250 and had no problem switching into 4 wheel drive when necessary. It's ok, empower them.