I checked into the weights of those caravans tested, and they are very light. Similar to fiberglass egg campers and Airstreams. (Also very expensive by our standards.) The weights are in the same range as our typical pop-up. I was impressed by how well those cars handled the emergency lane-change tests. I bet a lower center of gravity for a family sedan vs. a pickup truck has a lot to do with it. They also loaded the campers at floor level, not in upper cabinets, which should also mimic the handling of a pop-up.
