I'm still trying to figure out what I can do / can't do in my LX570. That being said, I have a family member with a late model but not new Highlander (completely stock). Assuming no rock climbing and no issues with clearance height, is there anywhere the Highlander wouldn't be able to follow me off pavement? I guess mostly traction (or loss thereof) to one or more wheels is the primary challenge? Others? And if so, how much different from the LX?