Due to an unexpected need to move a few cars around, the G10 and the trailer got a full workout during the course of a weekend. It was several hundred miles of towing all together, and a solid test of the van under full load. The Mercedes are not small light cars, but the van performed well on the highway and on country roads. The brakes are the one area where you need to pay attention when towing a full load. The trailer has dual axle electric brakes, and they were needed. I also discovered that there is a short of some kind when turning on the headlights. It must have been introduced when the trailer brake controller was installed.